Summary & Overview
HCPCS Level II M1050: Oswestry Disability Index Functional Status Measurement
HCPCS Level II code M1050 reports measurement of functional status using the Oswestry Disability Index (ODI v2.1a) performed within three months before surgery and again at approximately three months (6–20 weeks) after surgery. Nationally, standardized functional outcome measurement supports quality monitoring, care coordination, and value-based payment arrangements for spine care by documenting change in patient-reported disability. The code is most relevant to clinicians and billing teams in surgical and outpatient spine practices.
Key payers addressed in the analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise review of the code’s clinical intent, typical sites of service, and where it fits in perioperative outcome tracking. The publication outlines common implementation considerations, expected documentation elements tied to the ODI tool, and benchmarking context for payer coverage and quality programs. It also highlights policy and billing patterns that influence how payers may recognize or require outcome measurement codes in preoperative and postoperative workflows.
This summary is prepared for a national audience seeking clarity on the clinical meaning, administrative use, and payer relevance of HCPCS Level II code M1050.
Billing Code Overview
HCPCS Level II code M1050 documents that functional status was measured by the Oswestry Disability Index (ODI version 2.1a) patient-reported outcome tool within three months preoperatively and at three months (6 to 20 weeks) postoperatively. This code represents outcome measurement tied to spine-related functional assessment using a standardized, validated questionnaire for back pain and disability.
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Service type: Patient-reported outcome measurement of functional status using the Oswestry Disability Index
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Typical site of service: Preoperative and postoperative clinical settings where spine surgery is evaluated and followed (outpatient clinics, surgical practices, or ambulatory care settings)
Data not available in the input for modifiers, associated taxonomies, ICD-10 diagnoses, related codes, and service line.
Clinical & Coding Specifications
Clinical Context
A 52-year-old patient with chronic low back pain due to lumbar degenerative disc disease is scheduled for lumbar decompression and fusion. The care team administers the Oswestry Disability Index (ODI version 2.1a) as a patient-reported outcome measure within three months preoperatively to document baseline functional status and again at three months postoperatively (defined as 6–20 weeks) to assess improvement in disability and to support outcomes reporting and quality measurement. The preoperative ODI is completed during a surgical evaluation visit or via a secure patient portal; results are scored and entered into the medical record. Postoperative ODI administration occurs at the clinic follow-up at approximately 12 weeks or via telephone/portal if an in-person visit is not feasible. Results are used for perioperative documentation, care planning, and potential quality metrics required by payors or registries. Typical staff involved include the surgeon (orthopedic spine or neurosurgeon), clinic nursing staff, medical assistants, and outcomes coordinators. Typical sites of service are outpatient surgical clinics, ambulatory surgery centers, and hospital outpatient departments.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
25 | Significant, separately identifiable evaluation and management service by the same physician on the day of a procedure | Used if a distinct E/M visit is provided the same day ODI administration is billed with a related procedure |