Summary & Overview
HCPCS Level II M1451: Pervasive Developmental Disorder Diagnosis
HCPCS Level II code M1451 identifies patients with an active diagnosis of pervasive developmental disorder reported at any point before the end of a measure assessment period. The code supports quality measurement, population health tracking, and administrative reporting for developmental and behavioral health services. Nationally, standardized use of M1451 helps payers and providers monitor diagnostic prevalence and care coordination needs among patients with developmental disorders.
Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for the code, the typical service settings where the code is applied, and the role the code plays in reporting and quality measurement programs. The publication highlights common use cases for M1451, discusses implications for care management and documentation, and summarizes policy considerations that affect billing and reporting for developmental disorder measures.
This summary serves a national audience by explaining what M1451 represents, why consistent coding matters for population health and quality programs, and what topics stakeholders should expect in the full report, including benchmarks, policy updates, and clinical context.
Billing Code Overview
HCPCS Level II code M1451 denotes patients with an active diagnosis of pervasive developmental disorder at any time prior to the end of the measure assessment period. This code is used to identify and classify individuals who have been documented with pervasive developmental disorder for quality measurement, reporting, or administrative tracking purposes.
Service type: Diagnostic/behavioral health assessment and longitudinal diagnostic status tracking
Typical site of service: Outpatient behavioral health clinics, pediatric specialty practices, developmental pediatrics, and community mental health centers
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A pediatric patient aged 4 years with delayed social communication and repetitive behaviors is brought to a developmental pediatrics clinic. The child has previously received a developmental screening and presents for diagnostic evaluation and ongoing care coordination for a suspected pervasive developmental disorder. During the clinic visit, the clinician documents an active diagnosis of pervasive developmental disorder on the problem list and in the medical record prior to the end of the measure assessment period. The clinical workflow includes intake by nursing, standardized developmental screening tools (for example, autism-specific screening), a focused developmental history and behavioral observation by the clinician, diagnostic formulation, care plan creation, and documentation of the diagnosis in the electronic health record to support quality measurement and care continuity. Typical sites of service include outpatient pediatric primary care, developmental-behavioral pediatrics clinics, and community mental health clinics that manage neurodevelopmental disorders. The service type is diagnosis and documentation of a neurodevelopmental disorder; administrative capture of an active M1451 measure population entry is part of quality reporting and payor performance measures.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the same day of the procedure |