M35.2 vs M45.A8
M35.2 (Behçet's disease) compared with M45.A8 (Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. M45.A8 carries an Excludes2 note covering M35.2: “Behçet's disease (M35.2)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M35.2Behçet's disease | M45.A8Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region | |
|---|---|---|
| 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 | Behçet's disease is a billable ICD-10-CM diagnosis code (M35.2). | Non-radiographic axial spondyloarthritis of sacral and sacrococcygeal region is a billable ICD-10-CM diagnosis code (M45.A8). |
| 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