M30.8 vs M35.1
M30.8 (Other conditions related to polyarteritis nodosa) compared with M35.1 (Other overlap 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. M35.1 carries an Excludes1 note covering M30.8: “polyangiitis overlap syndrome (M30.8)”
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
| M30.8Other conditions related to polyarteritis nodosa | M35.1Other overlap syndromes | |
|---|---|---|
| Billing status | Billable | 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 | Other conditions related to polyarteritis nodosa is a billable ICD-10-CM diagnosis code (M30.8). | Other overlap syndromes is a billable ICD-10-CM diagnosis code (M35.1). |
| Includes | autoimmune disease NOS collagen (vascular) disease NOS systemic autoimmune disease systemic collagen (vascular) disease | 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