CPT 99341–99350: A Practical Home and Residence E/M Billing Framework for 2026

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 Executive Summary

CPT 99341–99350 is the unified Home or Residence Services E/M family. Since the 2023 code consolidation eliminated the separate domiciliary codes (99324–99328 and 99334–99337), this single family now covers private homes, assisted living facilities, group homes, custodial care facilities, and residential substance abuse treatment facilities.

New patients map to 99341, 99342, 99344, and 99345. Established patients map to 99347 through 99350. Level selection follows medical decision making or total time on the date of the encounter.

The three failure points our billing specialists see most often are not code selection at all: incorrect place of service for the specific residence type, patient status determined against the individual provider rather than the group, and documentation that doesn't independently support the level billed. Verify those three before the claim goes out and most home visit denials disappear.

MOST IMPORTANT CORRECTION

Homebound Status Is Not Required

•  A persistent misconception is that patients must be homebound to justify a physician home visit. CMS states directly that for home services provided by a physician using 99341–99350 with POS 12, the beneficiary does not need to be confined to the home. Homebound status is a Medicare home health benefit requirement — a different benefit entirely. Practices that restrict home E/M billing to homebound patients may be leaving legitimate services unbilled.

1. The First Question Is Not 'Which CPT Code?'

Billing teams tend to start at the code. That's the wrong entry point, and it's why so much rework happens downstream. The correct sequence starts with the setting and the relationship.

Ask these in order, before anyone selects a code:

1.  Where was the patient physically located, and what type of facility is that specifically?

2.  Does that setting belong to the Home or Residence family, or a different E/M family entirely?

3.  Was the provider physically present at that location?

4.  Is the patient new or established — measured against the group and specialty, not just this provider?

5.  What was the documented clinical reason for the encounter?

6.  Does MDM or documented time determine the level here?

7.  What does this specific payer require?

Only after all seven have answers does code selection become a mechanical step rather than a judgment call.

2. Home vs. Residence vs. Facility: Getting the Setting Right

The 2023 consolidation simplified the code family but made POS selection more consequential, because one code family now spans five different place-of-service codes.

Setting	Code Family	POS	Common Confusion	Billing Check
Private residence (patient's home)	99341–99350	POS 12	Assuming any home-like setting qualifies as POS 12	Provider must be physically present in the home
Assisted living facility	99341–99350	POS 13	Still billing retired domiciliary codes	Confirm the facility meets the assisted living definition
Group home	99341–99350	POS 14	Confusing a group home with a custodial care facility	Verify the facility type before assigning POS
Custodial care facility	99341–99350	POS 33	Treating custodial care as a nursing facility	Confirm level of care provided at the site
Residential substance abuse treatment facility	99341–99350	POS 55	Assuming behavioral settings need a different E/M family	Verify the facility classification
Skilled nursing facility	Nursing Facility E/M family	POS 31	Billing 99341–99350 for SNF patients	Wrong code family entirely — verify setting first
Nursing facility	Nursing Facility E/M family	POS 32	Using home/residence codes by habit	Confirm the facility's Medicare classification
Hospital inpatient	Hospital E/M family	POS 21	Billing a home visit code during an inpatient stay	CMS RAC activity specifically targets this pattern
COMMON MISTAKE Treating Every Residential Setting as POS 12 •  Why it happens: POS 12 was the historical default for home visits, and staff habit persists after the code consolidation. •  Why it matters: POS affects payment calculation and, in some cases, whether the claim is valid at all. CMS MACs have identified office E/M codes submitted with POS 12 as an automatic denial trigger. •  Better approach: Capture facility type as a discrete field at scheduling and derive POS from it rather than letting coders infer it.

3. New Patient vs. Established Patient: The Decision That Changes the Code Family

This single determination moves the claim between two entirely different code ranges. It is also, in our audit experience, one of the most consistently mishandled fields in home-based billing.

Status	Code Range	Determination Rule	Common Error
New patient	99341, 99342, 99344, 99345	No professional service from the provider or same-specialty group member in the past three years	Assuming 'new to this provider' means new patient when a partner saw them last year
Established patient	99347, 99348, 99349, 99350	Received a professional service within the past three years from the provider or same-specialty group member	Treating a long gap in care as automatically making the patient new

The rule applies to professional services from the same provider or another provider of the same specialty in the same group. A patient seen by your partner eighteen months ago is established, even if this particular physician has never met them.

EXPERT INSIGHT

Where Patient Status Breaks Down in Home-Based Practices

•  Home-based primary care groups frequently rotate providers across a shared patient panel. Our revenue cycle specialists look for new-patient claims submitted where another provider in the same group and specialty billed a service within the prior three years. Because the encounter genuinely is new to that clinician, the error feels correct at the point of coding — which is exactly why it needs a systematic check rather than reliance on individual judgment.

4. CPT 99341–99350 Decision Matrix

Use this operationally: locate the documented MDM level or total time, then confirm the corresponding code matches the patient's status. Do not work backward from a code to justify documentation.

CPT	Status	MDM / Time Threshold	Typical Use	Common Risk
99341	New	Straightforward MDM or 15+ min	Brief problem-focused encounter	Undercoding when MDM actually supported a higher level
99342	New	Low MDM or 30+ min	Routine new patient assessment	Time documented without a specific minute count
99344	New	Moderate MDM or 60+ min	Multiple problems or moderate complexity	MDM elements not clearly documented
99345	New	High MDM or 75+ min	High complexity, unstable conditions	High-level code without high-complexity support
99347	Established	Straightforward MDM or 20+ min	Brief follow-up	Reflexively billing 99347 for every follow-up
99348	Established	Low MDM or 30+ min	Routine follow-up with stable issues	Time-based billing without recorded minutes
99349	Established	Moderate MDM or 40+ min	Worsening or multiple conditions	Rounding 38 minutes up to meet the threshold
99350	Established	High MDM or 60+ min	High complexity, acute decompensation	Billing 99350 at 58 documented minutes

Time thresholds are minimums, not ranges. Fifty-eight documented minutes on an established patient supports 99349, not 99350 — the 60-minute threshold has not been met. Rounding up to reach a threshold is an audit finding waiting to happen.

5. MDM vs. Time: How Should the Level Be Selected?

CMS indicates that for most E/M visit families, level selection may be based on medical decision making or on the total time spent by the physician or qualified NPP, and the record must support whatever is reported.

Selection Method	What Must Be Documented	Common Mistake	QA Check
Medical Decision Making	Problems addressed, data reviewed and analyzed, risk of complications or morbidity	Documenting the diagnosis list without showing the analysis behind it	Can a reviewer trace the MDM elements in the note?
Total time on the date of service	The actual number of minutes, and what activities the time covered	Writing 'extensive time spent' with no minute count	Is a specific minute figure documented?
Time exclusions	Travel time to the patient's location is excluded from total time	Including drive time in the total	Does the documented time exclude travel?
Consistency	MDM or time supports the level reported, and the note reflects the same story	Note supports a lower level than the code submitted	Does documentation independently support the billed level?
COMMON MISTAKE Assuming More Documentation Equals a Higher Level •  Why it happens: Pre-2021 E/M rules rewarded documentation volume through history and exam elements, and that instinct persists. •  Why it matters: Level selection now rests on MDM or time. A four-page note documenting a straightforward problem still supports a straightforward-MDM code. •  Better approach: Train providers to document the complexity of the decision-making, not the volume of the narrative.

6. The Home Visit Documentation Scorecard

Score each element Pass, Review, or High Risk on a sample of claims. We have marked which elements are requirements versus recommendations for audit defensibility, because conflating the two creates unnecessary provider burden.

☐  Medical necessity for the encounter — Required

☐  Patient location and setting type — Required

☐  Provider physical presence (POS 12) — Required

☐  Reason for the encounter — Required

☐  Problems addressed — Required for MDM-based selection

☐  Data reviewed and analyzed — Required for MDM-based selection

☐  Risk assessment — Required for MDM-based selection

☐  Total time in specific minutes — Required for time-based selection

☐  Assessment and plan — Required

☐  Provider identity and date of service — Required

☐  Care coordination activity — Recommended for defensibility

☐  Rationale for the home setting specifically — Recommended for defensibility

☐  Payer-specific documentation elements — Verify per payer

7. Medical Necessity: What Actually Makes the Claim Defensible?

There is a meaningful gap between a patient receiving care at home and a claim that can withstand review. The first is a care delivery fact. The second requires documentation connecting the clinical need to the service billed.

Element	Requirement Status	Explanation
Homebound status	NOT required for physician E/M home visits under 99341–99350	This is a Medicare home health benefit requirement, not a physician E/M requirement — CMS states the beneficiary does not need to be confined to the home for 99341–99350 with POS 12
Provider physical presence	Required for POS 12 billing	CMS specifies a home visit with POS 12 cannot be billed unless the provider was actually present in the beneficiary's home
Clinical reason for encounter	Required	Documentation must show why the encounter was medically necessary, not simply that it occurred
Appropriate setting	Required	The service must genuinely belong to the Home or Residence family rather than another E/M family
Frequency reasonableness	Payer-reviewed	MACs have identified excessive visit frequency as a denial trigger — frequency should reflect clinical need

Physician E/M home and residence services are distinct from the Medicare home health benefit. They have different requirements, different billing mechanisms, and different eligibility criteria. Conflating them produces both unbilled legitimate services and misapplied restrictions.

8. POS Coding: One of the Most Common Claim Failure Points

Because one code family now spans multiple residence types, POS accuracy carries more weight than it did before the consolidation. CMS has confirmed the Home and Residence Services codes are billable with multiple POS codes beyond POS 12.

•     POS 12 — Home (private residence). Provider must be physically present.

•     POS 13 — Assisted Living Facility.

•     POS 14 — Group Home.

•     POS 33 — Custodial Care Facility.

•     POS 55 — Residential Substance Abuse Treatment Facility.

POS codes and their applicability are maintained by CMS and updated periodically. Verify current POS requirements against the CMS Place of Service Code Set and your MAC's guidance before configuring billing system defaults.

9. The Ten Most Common CPT 99341–99350 Billing Errors

Error	Why It Happens	Claim Consequence	How to Detect It	Prevention
Wrong patient status	Three-year rule applied to the individual provider instead of the group/specialty	Claim denied or paid at the wrong level	Audit new-patient claims against group encounter history	Automated patient-status check against group history
Wrong E/M family	Setting misidentified — SNF patient billed as a home visit	Denial; RAC exposure if inpatient	Compare POS against facility type on a claim sample	Setting verification at scheduling
Incorrect POS	Assisted living billed as POS 12 instead of 13	Payment variance or denial	Cross-check POS against the documented address type	Facility-type field required before coding
Unsupported level	Level chosen by habit rather than documented MDM or time	Overpayment exposure or lost revenue	Sample audit comparing note to billed level	Pre-bill documentation review
Documentation mismatch	Note supports different complexity than submitted	Denial on review; recoupment risk	Coding QA sampling	Coder-provider feedback loop
MDM inconsistency	Diagnoses listed but analysis not documented	Downcoding on audit	Review MDM elements in a claim sample	MDM-prompting note templates
Time documentation gaps	Total time referenced without specific minutes	Time-based selection unsupported	Search notes for time-based claims lacking minute counts	Require a discrete minutes field
Diagnosis/necessity mismatch	Diagnosis doesn't reflect what drove the encounter complexity	Medical necessity denial	Compare primary diagnosis to documented reason for visit	Diagnosis selection tied to the encounter's driver
Payer-specific edits	Medicare rules assumed to apply to a commercial plan	Avoidable denials	Denial analysis grouped by payer	Payer-specific policy matrix
Duplicate/conflicting services	Home visit billed during an inpatient stay or overlapping another service	Improper payment finding	Cross-reference claims against inpatient dates	Eligibility and admission status check before billing

10. Denial Prevention Matrix

Denial Scenario	Likely Root Cause	Front-End Prevention	Billing QA	Correction Consideration
Patient status denial	New patient billed when the group saw them within three years	Query group encounter history at scheduling	Verify status before code assignment	Rebill as established if within timely filing
POS mismatch denial	POS doesn't match the documented setting	Capture facility type as a required field	POS-to-setting cross-check in the scrub	Correct POS and resubmit
Level not supported	Documentation supports a lower level than billed	Provider education on MDM documentation	Pre-bill sample review of high-level claims	Rebill at the supported level
Medical necessity denial	Reason for the home encounter not documented	Structured 'reason for home visit' field	Necessity check during coding QA	Appeal only if records genuinely support it
Frequency denial	Visit frequency exceeds what the payer considers reasonable	Clinical review of visit cadence	Frequency monitoring by patient	Appeal with clinical justification if supportable
Wrong code family	SNF or inpatient patient billed with home codes	Setting verification at scheduling	POS/code family consistency edit	Rebill under the correct family if timely
Overlapping services	Home visit conflicts with another same-day service	Same-day service check	Claim-level overlap edit	Determine which service the documentation supports
Payer policy denial	Commercial payer applies different home visit rules	Maintain payer-specific requirements	Payer-specific scrub rules	Appeal per that payer's process
BEFORE YOU APPEAL THE DENIAL •  Confirm the denial reason code and what it actually indicates •  Verify whether the documentation genuinely supports the billed service •  Check whether the error is correctable through resubmission rather than appeal •  Confirm the claim is within the payer's appeal window •  Determine whether this denial is isolated or part of a pattern •  If it is a pattern, fix the workflow before appealing the individual claims

11. Under-Coding vs. Over-Coding

Practices tend to fear over-coding and quietly tolerate under-coding. Both are coding inaccuracies, and both carry consequences.

Pattern	Example	Consequence
Under-coding	Billing 99347 for every established visit regardless of documented complexity	Lost legitimate revenue, distorted acuity data, understated practice performance
Over-coding	Billing 99350 when documentation supports moderate complexity	Recoupment, audit exposure, payer scrutiny, potential compliance action
Accurate coding	Level selected from documented MDM or time, verified before submission	Defensible claims, accurate analytics, sustainable revenue

The objective is accurate coding supported by documentation — not maximized levels, and not reflexively conservative ones. A practice billing 99347 for every established home visit is misrepresenting its clinical work just as surely as one billing 99350 without support.

12. Revenue Integrity Audit for Home and Residence Visits

Step	Action	What to Verify	Output
Step 1	Pull 100 recent 99341–99350 claims across your payer mix	Sample should span providers and settings	Claim list assembled
Step 2	Verify patient status against group encounter history	Three-year rule applied at group/specialty level	New vs established error count
Step 3	Verify POS against documented setting	Facility type confirmed independently	POS error count
Step 4	Review CPT selection against documentation	Level supported by MDM or time	Level accuracy rate
Step 5	Review MDM or time support specifically	Minutes documented where time-based	Time documentation gap count
Step 6	Compare diagnoses to documented medical necessity	Primary diagnosis reflects encounter driver	Necessity mismatch count
Step 7	Review payer response and payment accuracy	Paid amount vs expected	Underpayment count
Step 8	Identify systematic patterns by provider, setting, and payer	Group findings rather than listing individual errors	Pattern summary
Step 9	Calculate financial impact of each pattern	Use your own contracted rates	Quantified exposure
Step 10	Implement corrective action and re-audit	Fix the workflow, not just the claims	Improvement measured at re-audit

13. Home Visit Coding Variance: Illustrative Modeling

The table below demonstrates how to structure a variance exposure calculation. The 5% variance rate is a placeholder for illustration, not a benchmark or industry figure. Replace it with your actual audit-derived error rate and your own contracted rates.

Monthly Home Visits	Assumed Coding Variance	Claims Potentially Affected	Monthly Exposure	Annualized Exposure	Corrective Action
100	5% coding variance	5 claims	Illustrative	Illustrative	Pre-bill level review
250	5% coding variance	13 claims	Illustrative	Illustrative	Provider MDM education
500	5% coding variance	25 claims	Illustrative	Illustrative	Automated POS validation
1,000	5% coding variance	50 claims	Illustrative	Illustrative	Full coding QA program

Illustrative example only — not a guaranteed financial result and not based on published reimbursement data. Actual exposure depends entirely on your payer mix, contracted rates, service mix, and your practice's real error rate as measured by audit. We have deliberately left the dollar columns unpopulated rather than publishing invented reimbursement figures.

14. Payer-Specific Billing Considerations

Issue	Medicare	Medicare Advantage	Medicaid	Commercial
Coverage	Covered under Part B when medically necessary	Generally follows Medicare but plan rules apply	Varies by state program	Set independently by each payer
Homebound requirement	Not required for 99341–99350	Typically follows Medicare	Varies by state	Verify per payer — some impose their own criteria
POS requirements	POS 12, 13, 14, 33, 55 per setting	Typically follows CMS conventions	Typically follows CMS conventions	Usually aligned, but verify
Prior authorization	Generally not required for E/M	May be required	May be required	Frequently required — verify before the visit
Provider eligibility	Physicians and qualified NPPs	Plan network rules apply	State enrollment rules apply	Credentialing and network status apply
Frequency limits	Reviewed for reasonableness	Plan may impose limits	State may impose limits	May impose explicit visit caps

Payer policies differ, and Medicare Advantage plans, state Medicaid programs, and commercial payers each set their own requirements. Verify current payer-specific policies, medical policies, and contract terms rather than applying Medicare rules universally.

15. What Matters for 2026

Rather than manufacturing a dramatic annual change, here is what is genuinely worth verifying for the current year:

•     The merged 99341–99350 family remains the Home or Residence Services structure; the legacy domiciliary codes remain retired

•     CPT code sets update annually on January 1 — refresh billing system code libraries accordingly

•     ICD-10-CM updates annually on October 1 — diagnosis selections should be validated against the current tabular list

•     CMS maintains and periodically updates the Place of Service Code Set; verify current POS definitions before changing system configuration

•     Medicare Physician Fee Schedule values and the conversion factor are updated annually; verify current rates through the CMS Physician Fee Schedule Look-Up Tool rather than relying on published estimates

•     HCPCS add-on code G0318 exists for prolonged home or residence E/M services when all prolonged service requirements are met

We are not publishing specific 2026 reimbursement amounts in this guide. Payment varies by MAC jurisdiction and geographic locality, and secondhand rate figures circulate widely without reliable sourcing. Use the CMS Physician Fee Schedule Look-Up Tool for your locality.

16. CPT 99341–99350 vs. Other E/M Families

This table is designed to help you determine when not to use the Home or Residence family.

Patient Setting	Code Family	Selection Method	Common Confusion	Verification
Private home, assisted living, group home, custodial care, residential SUD facility	Home or Residence Services (99341–99350)	MDM or total time	Assuming all residential settings use one POS	Confirm facility type and POS
Office or outpatient clinic	Office/Outpatient (99202–99215)	MDM or total time	Billing office codes with POS 12	CMS MACs flag this as an automatic denial
Skilled nursing or nursing facility	Nursing Facility E/M	MDM or total time	Using home codes for SNF residents	Verify the facility's Medicare classification
Hospital inpatient or observation	Hospital Inpatient/Observation E/M	MDM or total time	Home visit code billed during an admission	Check admission status before billing
EXPERT INSIGHT The Inpatient Overlap Problem •  CMS Recovery Audit Contractor activity has specifically targeted home visit codes billed while the patient was actually a hospital inpatient. This happens when a home-based practice's billing runs on a delayed cycle and an admission occurred between the encounter and charge entry. A pre-bill check against admission status closes this gap — and it is far cheaper than responding to an improper payment finding.

17. Real-World Billing Scenarios

Scenario 1: Established Patient at Private Residence

Situation: Physician visits a long-standing patient at home for chronic disease follow-up. Documented 32 minutes, low-complexity MDM. Billing question: Which code and POS? Reasoning: Established patient, low MDM or 30+ minutes supports 99348; POS 12 with provider presence documented. Common mistake: Defaulting to 99347 because the visit felt routine. Prevention lesson: Let documented MDM or time drive the level, not impression.

Scenario 2: New Patient at Assisted Living

Situation: First encounter with a resident at an assisted living facility, moderate MDM. Billing question: Does assisted living change the code family? Reasoning: No — assisted living falls under 99341–99350, but POS is 13, not 12. Common mistake: Billing retired domiciliary codes or defaulting to POS 12. Prevention lesson: Code family and POS are separate determinations.

Scenario 3: Patient Incorrectly Billed with Nursing Facility Codes

Situation: A custodial care facility resident was billed using nursing facility E/M codes. Billing question: Which family applies? Reasoning: Custodial care facilities fall within Home or Residence Services with POS 33. Common mistake: Assuming any facility-based resident belongs to the nursing facility family. Prevention lesson: Verify the facility's actual classification, not its general appearance.

Scenario 4: Documentation Supports a Different Level

Situation: Claim submitted as 99350; audit finds documentation supports moderate complexity. Billing question: What now? Reasoning: The supported level is 99349. Common mistake: Appealing the downcoding rather than correcting the process. Prevention lesson: Pre-bill review of high-level claims catches this before submission.

Scenario 5: POS Mismatch Creates a Denial

Situation: Group home visit billed with POS 12 instead of POS 14. Billing question: Correct or appeal? Reasoning: Correct the POS and resubmit if within timely filing. Common mistake: Appealing a claim that simply needs correction. Prevention lesson: Distinguish correctable errors from genuine appeal situations.

Scenario 6: Commercial Payer Applies Different Policy

Situation: A commercial payer denies a home visit Medicare would cover. Billing question: Is the denial valid? Reasoning: Possibly — commercial payers set independent policies, including frequency limits and authorization requirements. Common mistake: Appealing on the basis of Medicare rules. Prevention lesson: Maintain payer-specific policy documentation.

Scenario 7: Incomplete Time-Based Documentation

Situation: Note states 'extended time spent with patient and family' with no minute count, billed at a time-based level. Billing question: Is the level supported? Reasoning: No — time-based selection requires the actual minutes documented. Common mistake: Accepting qualitative time language. Prevention lesson: Require a discrete minutes field for time-based claims.

Scenario 8: Systematic Undercoding Found During Audit

Situation: An internal audit finds a provider bills 99347 for nearly every established visit despite documentation frequently supporting higher complexity. Billing question: Is this a compliance issue? Reasoning: It is a coding accuracy issue with revenue consequences and distorted acuity data. Common mistake: Treating conservative coding as inherently safe. Prevention lesson: Audit for both directions of variance.

18. Before You Submit the Claim: Quality-Control Checklist

☐  Patient status verified against group and specialty history

☐  Setting and facility type verified

☐  POS matches the verified setting

☐  Provider physical presence documented (POS 12)

☐  Medical necessity documented

☐  Correct CPT family confirmed for the setting

☐  MDM or documented time supports the billed level

☐  Time in specific minutes recorded, if time-based

☐  Diagnosis reflects the encounter's clinical driver

☐  Payer-specific requirements checked

☐  Modifier requirements reviewed

☐  Duplicate or overlapping same-day services reviewed

☐  Admission status checked for the date of service

☐  Claim scrub completed

☐  Documentation retained and retrievable

19. Executive KPI Dashboard

Metric	What It Measures	What It Tells a Practice
Clean claim rate	Share accepted without correction	Declining rate points to front-end data capture problems
Claim acceptance rate	Share passing payer front-end edits	Rejections often signal POS or eligibility data issues
Denial rate	Share denied after adjudication	Track separately for home visits — patterns differ from office claims
Coding accuracy	Audit-verified level accuracy	Both over- and under-coding should be measured
Documentation deficiency rate	Claims lacking support for the billed level	Directly predicts audit exposure
Days in AR	Collection speed for home visit claims	Longer cycles may indicate denial follow-up gaps
Net collection rate	Expected reimbursement actually collected	Reveals underpayments denial reports miss
First-pass resolution	Claims paid without rework	Best single indicator of workflow health
Charge lag	Days from encounter to charge entry	Home-based care often has longer lag than office care
Underpayment rate	Claims paid below contracted rate	Requires deliberate variance review to detect

20. How MedCloudMD Approaches Home and Residence Billing

Our certified coding professionals and revenue cycle experts support home-based practices with documentation review, coding QA, claim scrubbing configured for setting-specific POS logic, denial prevention, AR follow-up, payer policy analysis, and compliance-focused workflow design.

We do not claim that outsourcing automatically increases reimbursement. What structured coding QA does is reduce variance in both directions — catching unsupported levels before they become recoupments, and catching undercoding before it becomes unrecoverable lost revenue.

Frequently Asked Questions

What are CPT 99341–99350 used for?

They report evaluation and management services delivered in a patient's home or residence. The family covers private residences, assisted living facilities, group homes, custodial care facilities, and residential substance abuse treatment facilities. Codes 99341–99345 apply to new patients; 99347–99350 apply to established patients.

What is the difference between CPT 99341 and 99347?

Both are the entry-level codes in their respective ranges, requiring straightforward medical decision making. CPT 99341 is for new patients and carries a 15-minute time threshold; 99347 is for established patients with a 20-minute threshold. The determining factor is patient status, not service content.

Are CPT 99341–99350 for new or established patients?

Both. The family splits into new patient codes (99341, 99342, 99344, 99345) and established patient codes (99347, 99348, 99349, 99350). Status is determined by whether the patient received a professional service from the provider or a same-specialty provider in the same group within the prior three years.

What place of service codes can be used with 99341–99350?

CMS has confirmed these codes are billable with multiple POS codes: POS 12 for home, POS 13 for assisted living, POS 14 for group home, POS 33 for custodial care facility, and POS 55 for residential substance abuse treatment facility. Verify current POS definitions against the CMS Place of Service Code Set.

Can home visits be billed based on MDM?

Yes. CMS indicates that for most E/M visit families, level selection may be based on medical decision making. The documentation must support the MDM level reported, including the problems addressed, data reviewed and analyzed, and risk.

Can home visits be billed based on time?

Yes, using total time spent on the date of the encounter. The note must document the actual number of minutes — qualitative statements like 'extensive time' do not support time-based selection. Travel time to the patient's location is excluded from total time.

Does a patient have to be homebound for CPT 99341–99350?

No. CMS states that for home services provided by a physician using 99341–99350 with POS 12, the beneficiary does not need to be confined to the home. Homebound status is a requirement of the Medicare home health benefit, which is a separate benefit from physician E/M services.

What documentation is required for home E/M visits?

At minimum: medical necessity for the encounter, the patient's location and setting, the clinical reason for the visit, the elements supporting MDM or the specific minutes if time-based, assessment and plan, provider identity, and date of service. For POS 12, the provider's physical presence in the home must be supported.

What are the most common 99341–99350 denial reasons?

Incorrect patient status, POS not matching the documented setting, documentation not supporting the billed level, medical necessity not established, visit frequency exceeding what the payer considers reasonable, wrong code family for the setting, and payer-specific policy conflicts.

How can practices audit home visit billing for accuracy?

Pull a sample of recent claims, then verify patient status against group encounter history, POS against documented setting, CPT level against documented MDM or time, diagnosis against the clinical driver, and payment against expected reimbursement. Group findings into patterns by provider, setting, and payer rather than treating each error individually.

Sources & References

This resource references CMS Medicare Learning Network guidance on Evaluation and Management Services (MLN006764), CMS Manual System transmittal guidance on Home and Residence Services billing and place of service requirements, CMS guidance on E/M level selection by medical decision making or time, and the CMS Place of Service Code Set. CPT is copyrighted by the American Medical Association; code descriptors referenced here are summarized rather than reproduced. Verify all current requirements against CMS, your Medicare Administrative Contractor, and applicable payer policies before submitting claims.

Last reviewed: September 2026

Billing policies and payer requirements can change. Practices should verify current Medicare, CPT, and payer-specific requirements before submitting claims.

Disclaimer

This article is provided for general educational and informational purposes only and does not constitute legal, medical, coding, billing, or reimbursement advice. Coding requirements, place of service conventions, documentation standards, coverage rules, and reimbursement policy change over time and vary by payer, plan, jurisdiction, provider type, and individual patient circumstances. Financial examples are illustrative only and are not guaranteed results. Practices should verify current requirements directly with CMS, applicable Medicare Administrative Contractors, and each relevant payer before submitting claims. MedCloudMD does not guarantee reimbursement, claim approval, or specific financial outcomes.