G99.2 vs M47.0
G99.2 (Myelopathy in diseases classified elsewhere) compared with M47.0 (Anterior spinal and vertebral artery compression syndromes), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. G99.2 carries an Excludes1 note covering M47.0: “spondylosis (M47.0-, M47.1-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| G99.2Myelopathy in diseases classified elsewhere | M47.0Anterior spinal and vertebral artery compression syndromes | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Myelopathy in diseases classified elsewhere is a billable ICD-10-CM diagnosis code (G99.2). | Anterior spinal and vertebral artery compression syndromes is a non-billable ICD-10-CM category code (M47.0). |
| Includes | — | arthrosis or osteoarthritis of spine degeneration of facet joints |
| Code first | underlying disease, such as: neoplasm (C00-D49) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources