M34 vs M61
M34 (Systemic sclerosis [scleroderma]) compared with M61 (Calcification and ossification of muscle), 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. M61 carries an Excludes1 note covering M34: “myopathy in scleroderma (M34.-)”
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
| M34Systemic sclerosis [scleroderma] | M61Calcification and ossification of muscle | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| 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 | Systemic sclerosis [scleroderma] is a non-billable ICD-10-CM category code (M34). | Calcification and ossification of muscle is a non-billable ICD-10-CM category code (M61). |
| Includes | autoimmune disease NOS collagen (vascular) disease NOS systemic autoimmune disease systemic collagen (vascular) disease | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources