M54.0 vs M79.3
M54.0 (Panniculitis affecting regions of neck and back) compared with M79.3 (Panniculitis, unspecified), 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. M54.0 carries an Excludes1 note covering M79.3: “panniculitis NOS (M79.3)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. M79.3 carries an Excludes1 note covering M54.0: “neck and back panniculitis (M54.0-)”
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
| M54.0Panniculitis affecting regions of neck and back | M79.3Panniculitis, unspecified | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Panniculitis affecting regions of neck and back is a non-billable ICD-10-CM category code (M54.0). | Panniculitis, unspecified is a billable ICD-10-CM diagnosis code (M79.3). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources