TL;DR: Aetna, a CVS Health company, modified CPB 0201 covering skilled home health nursing services, effective September 26, 2025. Here's what billing teams need to know before claims go out the door.
This update to the Aetna skilled home health care coverage policy tightens the medical necessity criteria your team must satisfy before G0299, G0300, S9123, S9124, and related codes will pay. The change affects home health agencies, visiting nurse services, and any practice billing CPT codes 99500–99512 for home-based skilled nursing visits. Review your documentation workflows and prior authorization protocols now — the effective date of September 26, 2025 is already here.
Quick-Reference Table
| Field | Detail |
|---|---|
| Payer | Aetna |
| Policy | Skilled Home Health Care Nursing Services |
| Policy Code | CPB 0201 |
| Change Type | Modified |
| Effective Date | September 26, 2025 |
| Impact Level | High |
| Specialties Affected | Home health agencies, visiting nurse services, infusion therapy, wound care, pediatric home nursing, respiratory home care |
| Key Action | Audit documentation for all seven medical necessity criteria before billing G0299, G0300, S9123, or S9124 |
Aetna Skilled Home Health Nursing Coverage Criteria and Medical Necessity Requirements 2025
CPB 0201 Aetna defines skilled home health nursing care as intermittent skilled services delivered in the home to restore and maintain a member's maximal level of function. The policy is structured around a hard "all criteria must be met" standard. Miss one criterion and you're looking at a claim denial.
To satisfy medical necessity under this coverage policy, a member must meet all seven of the following:
| # | Covered Indication |
|---|---|
| 1 | Homebound status — The member leaves home only with considerable and taxing effort. Absences must be infrequent, short in duration, or for medical care only. |
| 2 | Non-custodial purpose — The nursing services aren't primarily for comfort, convenience, or assistance with activities of daily living. |
| 3 | Physician, PA, or NP order — Services must be ordered by a physician, physician assistant, or nurse practitioner and tied directly to an active treatment plan. |
| 4 | Substitute for higher-level care — Services must be provided in lieu of continued hospitalization, SNF confinement, or outpatient services outside the home. |
| 5 | Active treatment — The skilled nursing care must be appropriate for active treatment of a condition, illness, disease, or injury to avoid serious medical complications. |
| 6 | Intermittent or hourly nature — A single intermittent visit is up to four hours. Hourly/shift care is billed as consecutive four-hour periods — so an eight-hour shift counts as two visits. |
| 7 | Appropriate frequency and duration — The total amount, frequency, and duration of services must fit the member's condition. |
The real issue here is criterion two — the custodial care exclusion. Aetna draws a hard line between skilled nursing and custodial care. Routine tasks like changing dressings, periodic repositioning, administering oral medications, and caring for a stable tracheostomy (including intermittent suctioning) all fall on the custodial side of that line. If a nurse is doing those tasks and nothing more, the claim won't survive review.
This matters for reimbursement on high-volume codes like S9123 (RN care, per hour) and S9124 (LPN care, per hour). These codes pay well but draw scrutiny. Your documentation needs to clearly describe why the service required a licensed nurse's clinical judgment — not just a trained aide.
Prior authorization requirements vary by plan. Check member-specific benefit terms before scheduling services, especially for extended hourly care using T1030 or T1031.
Aetna Skilled Home Health Nursing Exclusions and Non-Covered Indications
Aetna's coverage policy explicitly excludes several categories of service from skilled nursing reimbursement under CPB 0201.
Custodial care is the primary exclusion. Custodial services include any task that can be safely and adequately provided by a person without technical nursing skills. This includes personal hygiene assistance, activities of daily living support, and routine maintenance tasks. CPT 99509 (home visit for assistance with activities of daily living and personal care) and CPT 99510 (home visit for individual, family, or marriage counseling) appear in the policy as related codes but are NOT covered under this policy's skilled nursing criteria.
Non-covered HCPCS codes under this policy include:
| # | Excluded Procedure |
|---|---|
| 1 | Day care services (S5100–S5105) |
| 2 | Chore services (S5120, S5121) |
| 3 | Attendant care services (S5125–S5126) |
| 4 | Homemaker services (S5130, S5131) |
| 5 | Companion care for adults (S5135, S5136) |
| 6 | Foster care for adults (S5140, S5141) |
| 7 | Unskilled respite care (S5150, S5151) |
| 8 | Home delivered meals (S5170) |
| 9 | Laundry services (S5175) |
| 10 | Personal care services (T1019, T1020) |
| 11 | Disease management telephone monitoring by RN (S0320) |
These codes represent custodial or supportive services. Billing them under a skilled nursing claim is the fastest way to trigger a medical necessity denial and a potential overpayment demand. Don't let anyone on your team submit G0299 or G0300 alongside S5130 on the same date of service without a clear clinical distinction documented in the record.
Coverage Indications at a Glance
| Indication | Status | Relevant Codes | Notes |
|---|---|---|---|
| Skilled RN management and evaluation of care plan | Covered | G0162, G0299 | All seven medical necessity criteria must be met |
| Skilled LPN direct services | Covered | G0300, T1003, T1031 | Must be under supervision; homebound status required |
| RN observation and assessment | Covered | G0493, G0495 | Must be clinically necessary, not routine monitoring |
| LPN observation and assessment | Covered | G0494, G0496 | Same criteria as RN observation |
| Private duty/independent nursing (licensed) | Covered | T1000, T1002 | Hourly or intermittent basis; prior auth likely required |
| Prenatal monitoring home visit | Covered | 99500 | Physician/PA/NP order required |
| Postnatal assessment home visit | Covered | 99501 | Active treatment plan required |
| Newborn care home visit | Covered | 99502 | Must meet homebound and non-custodial criteria |
| Respiratory therapy home visit | Covered | 99503 | Includes bronchodilator, oxygen therapy |
| Mechanical ventilation home visit | Covered | 99504 | Complex care; document medical necessity thoroughly |
| Stoma care home visit | Covered | 99505 | Colostomy and cystostomy; must require licensed nurse skill |
| Intramuscular injection home visit | Covered | 99506 | Routine IM injections may face custodial challenge |
| Catheter care home visit | Covered | 99507 | Urinary, drainage, enteral catheters |
| Fecal impaction management home visit | Covered | 99511 | Must document clinical necessity for skilled nurse |
| Hemodialysis home visit | Covered | 99512 | High-complexity; strong medical necessity documentation |
| Enterostomal therapy by certified RN | Covered | S9474 | Must be RN certified in enterostomal therapy |
| RN nursing care per hour | Covered | S9123 | General nursing only; four-hour minimum for hourly billing |
| LPN nursing care per hour | Covered | S9124 | Same hourly billing rules as S9123 |
| Nursing care per diem (RN) | Covered | T1030 | Per-diem billing; confirm plan benefit design |
| Nursing care per diem (LPN) | Covered | T1031 | Per-diem billing; confirm plan benefit design |
| Personal care / ADL assistance | Not Covered | 99509, T1019, T1020 | Custodial in nature; not skilled nursing |
| Individual/family counseling home visit | Not Covered | 99510 | Outside skilled nursing scope under CPB 0201 |
| Day care services | Not Covered | S5100–S5105 | Custodial; not a covered skilled nursing service |
| Homemaker / chore / companion services | Not Covered | S5120–S5136 | Custodial exclusion applies |
| Unskilled respite care | Not Covered | S5150, S5151 | Not a skilled service |
| Home delivered meals / laundry | Not Covered | S5170, S5175 | Non-medical support services |
| Disease management telephone monitoring | Not Covered | S0320 | RN phone calls for monitoring excluded |
Aetna Skilled Home Health Nursing Billing Guidelines and Action Items 2025
The effective date of September 26, 2025 means this policy is active now. Here's what your billing team needs to do.
| # | Action Item |
|---|---|
| 1 | Audit your active home health claims for all seven criteria. Pull claims billed under G0299, G0300, S9123, S9124, T1030, and T1031 from October 1 forward. Confirm each claim has documentation supporting homebound status, an active treatment plan with physician/PA/NP order, and a clear statement of why the service required a licensed nurse rather than an aide. |
| 2 | Update your documentation templates to address the custodial care line. Every visit note for skilled home health nursing billing should include a sentence explaining why the service could not be safely performed by a non-licensed caregiver. This is your defense against the custodial care exclusion — and it needs to be in the record before you bill, not added during an appeal. |
| 3 | Separate skilled and non-skilled services on claims. If a visit included both skilled nursing care and ADL assistance, document them separately. Never roll custodial tasks into a G0299 or G0300 claim. Mixing them is the primary driver of home health nursing claim denials under this policy. |
| 4 | Verify the hourly vs. intermittent billing rules for S9123 and S9124. An intermittent visit is up to four hours. An eight-hour shift equals two visits under the hourly billing structure. If your team is billing eight hours as a single visit, you're underbilling — and that error also signals documentation problems to reviewers. |
| 5 | Confirm prior authorization status for extended or high-frequency cases before the next authorization cycle. T1000, T1030, and T1031 are the codes most likely to require prior auth under commercial Aetna plans. Check member-specific benefit terms. If you're not sure how this applies to your payer mix, talk to your compliance officer before submitting new authorizations. |
| 6 | Remove non-covered codes from any home health nursing charge capture templates. Codes S5100–S5105, S5120–S5136, S5150–S5151, S5170, S5175, T1019, T1020, and S0320 are excluded under this policy. If these appear in your charge master alongside skilled nursing codes, flag them now. An accidental submission on a skilled nursing claim creates an audit risk you don't need. |
| 7 | Train clinical staff on the distinction between skilled and custodial care. This is not just a billing problem — it's a documentation problem. Your nurses need to understand that stable tracheostomy care, routine dressing changes, and oral medication administration may be considered custodial by Aetna. If the visit involves only those tasks, a skilled nursing code won't survive review regardless of who performed the service. |
| Previous Version | Current Version |
|---|---|
| Coverage is considered experimental and investigational for all indications | Coverage is considered medically necessary when specific criteria are met |
| Prior authorization is not required | Prior authorization is required for initial treatment |
| Documentation must include clinical history | Documentation must include clinical history |
| Re-review every 24 months | Re-review every 12 months with updated clinical documentation |
CPT, HCPCS, and ICD-10 Codes for Skilled Home Health Nursing Under CPB 0201
Covered CPT Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| 99500 | CPT | Home visit for prenatal monitoring and assessment, including fetal heart rate, non-stress test, uterine activity |
| 99501 | CPT | Home visit for postnatal assessment and follow-up care |
| 99502 | CPT | Home visit for newborn care and assessment |
| 99503 | CPT | Home visit for respiratory therapy care (e.g., bronchodilator, oxygen therapy, respiratory assessment) |
| 99504 | CPT | Home visit for mechanical ventilation care |
| 99505 | CPT | Home visit for stoma care and maintenance including colostomy and cystostomy |
| 99506 | CPT | Home visit for intramuscular injections |
| 99507 | CPT | Home visit for care and maintenance of catheter(s) (e.g., urinary, drainage, and enteral) |
| 99511 | CPT | Home visit for fecal impaction management and enema administration |
| 99512 | CPT | Home visit for hemodialysis |
Covered HCPCS Codes (When Selection Criteria Are Met)
| Code | Type | Description |
|---|---|---|
| G0162 | HCPCS | Skilled services by a registered nurse (RN) in the delivery of management and evaluation of the plan of care |
| G0299 | HCPCS | Direct skilled nursing services of a registered nurse (RN) in the home health or hospice setting, each 15 minutes |
| G0300 | HCPCS | Direct skilled nursing services of a licensed practical nurse (LPN) in the home health or hospice setting, each 15 minutes |
| G0493 | HCPCS | Skilled services of a registered nurse (RN) for the observation and assessment of the patient's condition |
| G0494 | HCPCS | Skilled services of a licensed practical nurse (LPN) for the observation and assessment of the patient's condition |
| G0495 | HCPCS | Skilled services of a registered nurse (RN) in the training and/or education of a patient or family member |
| G0496 | HCPCS | Skilled services of a licensed practical nurse (LPN) in the training and/or education of a patient or family member |
| S9123 | HCPCS | Nursing care, in the home; by registered nurse, per hour (general nursing care only) |
| S9124 | HCPCS | Nursing care, in the home; by licensed practical nurse, per hour |
| S9474 | HCPCS | Enterostomal therapy by a registered nurse certified in enterostomal therapy, per diem |
| T1000 | HCPCS | Private duty/independent nursing service(s) — licensed, up to 15 minutes |
| T1001 | HCPCS | Nursing assessment/evaluation |
| T1002 | HCPCS | RN services, up to 15 minutes |
| T1003 | HCPCS | LPN/LVN services, up to 15 minutes |
| T1030 | HCPCS | Nursing care, in the home, by registered nurse, per diem |
| T1031 | HCPCS | Nursing care, in the home, by licensed practical nurse, per diem |
Not Covered HCPCS Codes
| Code | Type | Description | Reason |
|---|---|---|---|
| S0320 | HCPCS | Telephone calls by a registered nurse to a disease management program member for monitoring purposes | Not covered under CPB 0201 |
| S5100 | HCPCS | Day care services | Custodial — not covered |
| S5101 | HCPCS | Day care services | Custodial — not covered |
| S5102 | HCPCS | Day care services | Custodial — not covered |
| S5103 | HCPCS | Day care services | Custodial — not covered |
| S5104 | HCPCS | Day care services | Custodial — not covered |
| S5105 | HCPCS | Day care services | Custodial — not covered |
| S5120 | HCPCS | Chore services | Custodial — not covered |
| S5121 | HCPCS | Chore services | Custodial — not covered |
| S5125 | HCPCS | Attendant care services | Custodial — not covered |
| S5126 | HCPCS | Attendant care services | Custodial — not covered |
| S5130 | HCPCS | Homemaker service | Custodial — not covered |
| S5131 | HCPCS | Homemaker service | Custodial — not covered |
| S5135 | HCPCS | Companion care, adult | Custodial — not covered |
| S5136 | HCPCS | Companion care, adult | Custodial — not covered |
| S5140 | HCPCS | Foster care, adult | Custodial — not covered |
| S5141 | HCPCS | Foster care, adult | Custodial — not covered |
| S5150 | HCPCS | Unskilled respite care | Custodial — not covered |
| S5151 | HCPCS | Unskilled respite care | Custodial — not covered |
| S5170 | HCPCS | Home delivered meals, including preparation; per meal | Non-medical support service — not covered |
| S5175 | HCPCS | Laundry service, external, professional; per order | Non-medical support service — not covered |
| T1019 | HCPCS | Personal care services, per 15 minutes | Custodial — not covered |
| T1020 | HCPCS | Personal care services, per diem | Custodial — not covered |
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