Summary & Overview
HCPCS M1341: Missed Follow-Up Assessment Within 30–180 Days
HCPCS Level II code M1341 denotes patients who did not receive a follow-up assessment or who lacked an assessment within 30 to 180 days after an index assessment during the performance period. The code functions as a quality and continuity-of-care indicator, highlighting missed reassessments that can affect care coordination, outcome tracking, and program performance metrics nationwide. Its use is relevant across outpatient ambulatory care, home health programs, and other settings that require periodic reassessments.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a national overview of the code’s purpose, typical service contexts, and what to expect when this code appears on claims or quality reports. The publication summarizes benchmarks and performance considerations relevant to follow-up assessment rates, clarifies the clinical and administrative context for M1341, and outlines common reporting implications for payers and providers. Data not available in the input for payer-specific rates, associated taxonomies, and related ICD-10 diagnoses are noted where applicable. The content is intended to inform billing staff, compliance officers, and policy analysts about the role of M1341 in tracking missed follow-up assessments within the 30–180 day window.
Billing Code Overview
HCPCS Level II code M1341 identifies patients who did not have a follow-up assessment or did not have an assessment within 30 to 180 days after the index assessment during the performance period. This code is used to flag gaps in scheduled or completed follow-up assessments in longitudinal care monitoring.
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Service type: Follow-up assessment tracking and quality monitoring
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Typical site of service: Outpatient ambulatory settings, home health, and other care settings where periodic assessments are expected within a 30–180 day window
Clinical & Coding Specifications
Clinical Context
A patient completed an initial functional or psychosocial assessment related to home health, rehabilitation, or behavioral health services (index assessment). During the performance period, a required follow-up assessment between 30 and 180 days after the index assessment was not completed. Typical patient: an elderly home health patient with multiple chronic conditions (for example, congestive heart failure and diabetes) who received an initial comprehensive assessment at admission but missed the scheduled 30-to-180-day reassessment due to hospitalization, care coordination lapse, or patient non-adherence. Clinical workflow: the admitting clinician performs the index assessment, documents plan of care and follow-up schedule; case management tracks reassessments; when a reassessment is not documented within the 30–180 day window, the billing event for follow-up assessment cannot be substantiated and M1341 is reported to indicate absence of the required assessment during the performance period.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | When work or complexity substantially exceeds usual for a documented follow-up assessment attempt or extensive additional documentation is required related to care coordination efforts. |