L94.0 vs M34
L94.0 (Localized scleroderma [morphea]) compared with M34 (Systemic sclerosis [scleroderma]), 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. M34 carries an Excludes1 note covering L94.0: “circumscribed scleroderma (L94.0)”
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
| L94.0Localized scleroderma [morphea] | M34Systemic sclerosis [scleroderma] | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | L00-L99 — Diseases of the Skin and Subcutaneous Tissue (L00-L99) | M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99) |
| Definition | Localized scleroderma [morphea] is a billable ICD-10-CM diagnosis code (L94.0). | Systemic sclerosis [scleroderma] is a non-billable ICD-10-CM category code (M34). |
| Includes | Circumscribed scleroderma | 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