Summary & Overview
HCPCS M1049: ODI Not Measured at Three-Month Postoperative Assessment
HCPCS Level II code M1049 documents that the Oswestry Disability Index (ODI version 2.1a) was not used to measure functional status at the three-month postoperative interval (6–20 weeks). This code captures an absence of a specific standardized functional assessment in spine surgery follow-up care, which can affect quality measurement, outcomes tracking, and compliance with specialty program requirements nationally. Key payers considered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise explanation of what M1049 represents, why documenting standardized functional measures matters for postoperative spine care, and how payers typically treat omission codes in the context of quality reporting. The publication outlines expected uses of the code in clinical records, implications for registry and performance measurement, and common billing contexts where the code appears. It also identifies gaps where claims data alone may not capture clinical rationale for not administering the ODI and notes when additional documentation is typically necessary. Data not available in the input is clearly indicated where applicable.
Billing Code Overview
HCPCS Level II code M1049 indicates that functional status was not measured by the Oswestry Disability Index (ODI version 2.1a) at three months (6 - 20 weeks) postoperatively. The service type is a functional status assessment (or its omission) related to postoperative follow-up. The typical site of service is postoperative outpatient follow-up, such as a clinic or specialty practice where spine surgery follow-up occurs.
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 54-year-old patient underwent lumbar spinal decompression and fusion for degenerative spondylolisthesis. Three months postoperatively (between 6 and 20 weeks) the surgical clinic schedules a routine outcome assessment visit intended to include the Oswestry Disability Index (ODI, version 2.1a) to measure functional status. At the visit the patient reports improvement in pain but is unable to complete the ODI because of limited literacy and language barrier, or the form was not administered due to clinic workflow disruption (staffing shortage or telehealth visit without validated electronic ODI access). The clinical workflow documents the attempted but not completed functional assessment, the reason for omission (for example, patient refusal, cognitive impairment, or administrative error), and alternative functional or pain assessments recorded in the chart. The billing code M1049 is used to indicate that the ODI was not measured at the required three-month postoperative interval.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
22 | Increased procedural services | Use when reporting significantly greater work or complexity for the associated visit documentation separate from omission code reporting. |
23 |