Skilled Home Private Duty Nursing Care — CPB 0136 | AETNA Coverage Update

TL;DR: Aetna, a CVS Health company, modified CPB 0136 governing skilled home private duty nursing care, with an effective date of September 26, 2025. If your team bills T1000 for private duty nursing or any of the home visit CPT codes in the 99500 series, this policy update applies to you.

This update to the Aetna skilled home private duty nursing coverage policy touches a wide range of codes — 16 CPT codes and 372 HCPCS codes. The core billing risk here is benefit eligibility. Private duty nursing (PDN) reimbursement under this policy is only available on plans that include PDN benefits. Bill against a plan that doesn't carry those benefits and you're looking at a claim denial before medical necessity even enters the picture.

Quick-Reference: Aetna CPB 0136 Skilled Home Private Duty Nursing — September 2025

Aetna Skilled Home Private Duty Nursing Coverage Criteria and Medical Necessity Requirements 2025

The Aetna skilled home private duty nursing coverage policy defines PDN as skilled services performed by a licensed RN or LPN in the member's home. The clinical purpose is to replace continued inpatient treatment. That framing matters for how you build your medical necessity documentation.

The word "replace" is doing a lot of work in that definition. To satisfy medical necessity under this policy, the nursing services must be at a skill level that would otherwise require inpatient care. Custodial or companion care — even when delivered by a licensed nurse — does not meet that standard.

This applies to medically fragile day care as well. That's a distinct benefit category within CPB 0136, covering day care settings for members who require skilled nursing oversight outside the home environment. If your organization bills for both home PDN and day care services, these are governed by the same policy but may carry different prior authorization and documentation requirements.

The benefit eligibility issue is the biggest trap here. Aetna's CPB 0136 coverage policy only applies to plans that include private duty nursing benefits. Before you bill T1000 (private duty/independent nursing service, up to 15 minutes) or any supporting home visit code, your team must verify that the member's specific plan carries this benefit. It's not enough to confirm Aetna coverage. You need plan-level benefit verification.

Prior authorization is standard for PDN services of this complexity. Check the member's plan for prior auth requirements before the first visit, not after. Retro-auth on private duty nursing is rarely granted, and the reimbursement exposure per case is high — PDN cases run extended hours, and each 15-minute T1000 unit adds up fast.

Coverage Indications at a Glance

Aetna Skilled Home Private Duty Nursing Billing Guidelines and Action Items 2025

1. Verify PDN benefits at the plan level before September 26, 2025.
This is not a routine eligibility check. You need confirmation that the member's specific plan includes private duty nursing benefits. An Aetna card does not tell you this. Pull the benefit plan description or call the Aetna provider line and document what you find.

2. Audit your T1000 charge capture for accuracy.
T1000 bills in 15-minute units. If your charge capture rounds up or uses daily rates without unit-level documentation, you're exposed. Each unit needs a corresponding nursing note that shows skilled service delivery — not just presence in the home.

3. Separate skilled nursing from custodial care in your documentation.
Aetna will look at whether the service required a licensed RN or LPN to perform. If the documentation reads like a home health aide visit — ADL assistance, companionship, supervision — it won't pass medical necessity review. Write your nursing notes to reflect clinical judgment, assessment findings, and skilled interventions.

4. Check prior authorization requirements before the first billable visit.
PDN cases are high-volume, high-dollar. A retroactive denial on a 12-hour PDN case is a significant write-off. Get prior auth confirmed, documented, and tied to the service dates before nursing begins.

5. Distinguish home PDN billing from home health billing.
G0299 and G0300 are home health/hospice setting codes for direct skilled nursing services (RN and LPN respectively). S9123 and S9124 are nursing care in the home by hour. T1000 is the PDN-specific code. These are not interchangeable. Using the wrong code for the care setting will trigger a denial or a post-payment audit.

6. Bill home infusion add-on codes correctly.
CPT 99601 covers home infusion/specialty drug administration per visit, up to two hours. CPT +99602 adds each additional hour. List 99602 separately in addition to 99601 — it's an add-on code and cannot stand alone. Confirm plan-level infusion benefit as well.

7. Document medically fragile day care separately from home PDN.
If you bill both services for the same member, the documentation must distinguish the care setting and clinical rationale for each. Day care billing under S5100, S5101, S5102, or S5105 needs to show why the member requires skilled nursing oversight in a center-based setting.

8. If your mix includes complex cases, loop in your compliance officer.
PDN is one of the most scrutinized home care benefit categories. If you bill high volumes of T1000 or run ventilator-dependent or medically fragile populations, have your compliance officer review your documentation standards against the updated CPB 0136 criteria before the effective date.

CPT, HCPCS, and ICD-10 Codes for Skilled Home Private Duty Nursing Under CPB 0136

Covered HCPCS Code (When Selection Criteria Are Met)

CPT Codes Related to CPB 0136

These codes appear in the Aetna CPB 0136 policy as related codes. Coverage is context-dependent and tied to the member's plan benefits and medical necessity criteria.

HCPCS Codes Related to CPB 0136

Note: The full policy includes 372 HCPCS codes. The codes listed here are the primary billing codes affecting private duty nursing and home care reimbursement. Review the full CPB 0136 Aetna policy document for the complete code set.