Summary & Overview
HCPCS M1465: Patient Follow-Up More Than 180 Days After Treatment
HCPCS Level II code M1465 designates a patient follow-up encounter occurring more than 180 days after treatment. As a code used to capture long-term post-treatment evaluation, it matters nationally for tracking continuity of care, quality monitoring, and appropriate billing for extended surveillance visits following procedures or therapeutic courses. Accurate use of M1465 supports provider documentation of late follow-up services and helps payers and policy makers monitor longer-term outcomes and care utilization patterns.
Key payers referenced in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of the clinical context for late follow-up visits, typical sites of service, and what the code represents in administrative data. The publication summarizes available benchmarks and policy considerations tied to long-term follow-up billing, highlights common implementation questions, and outlines areas where documentation and coding clarity matter for claims processing and quality measurement.
This national overview is intended for coding professionals, revenue cycle leaders, and clinicians who need a clear reference on the purpose and application of M1465, and what to expect when this code appears on claims or is assessed in utilization reviews.
Billing Code Overview
HCPCS Level II code M1465 describes a patient follow up more than 180 days after treatment. This code represents follow-up care provided to a patient at least six months after the completion of a prior course of treatment or intervention. The service type is follow-up evaluation and management, focusing on long-term outcome assessment and ongoing care planning. The typical site of service is outpatient follow-up settings such as clinics, physician offices, or ambulatory care centers where long-term post-treatment surveillance and management occur.
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Clinical & Coding Specifications
Clinical Context
A typical patient scenario involves an adult who completed an initial course of disease-specific therapy (for example, chemotherapy, radiation, major surgery, or a procedural intervention) and returns for a scheduled long-term follow-up visit more than 180 days after the completion of treatment. The visit assesses recovery, late effects, disease status, surveillance testing needs, medication tolerance, and functional status. Common clinical workflows include review of interval history since treatment completion, focused physical exam, ordering or reviewing surveillance imaging or laboratory studies, medication reconciliation, coordination of survivorship or chronic care plans, and documentation of recommendations for ongoing monitoring.
Example: A 58-year-old patient treated with definitive radiotherapy and systemic therapy for malignancy completes therapy and, at day 210 post-treatment, presents for the scheduled survivorship follow-up. The clinician documents interval history, performs a focused exam, reviews surveillance CT imaging obtained prior to the visit, documents absence of recurrence and any late toxicities, and updates the survivorship care plan.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
24 | Unrelated Evaluation and Management service by the same physician during a postoperative period | Use when the visit for post-treatment follow-up is for a condition unrelated to the prior procedure or treatment within the global/post-op period |