M14.67 vs M36.4
M14.67 (Charcôt's joint, ankle and foot) compared with M36.4 (Arthropathy in hypersensitivity reactions classified elsewhere), 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. M14.67 carries an Excludes1 note covering M36.4: “hypersensitivity reactions (M36.4)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Yes, when both are documented. M36.4 carries an Excludes2 note covering M14.67: “arthropathies in diseases classified elsewhere (M14.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M14.67Charcôt's joint, ankle and foot | M36.4Arthropathy in hypersensitivity reactions classified elsewhere | |
|---|---|---|
| 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 | Charcôt's joint, ankle and foot is a non-billable ICD-10-CM category code (M14.67). | Arthropathy in hypersensitivity reactions classified elsewhere is a billable ICD-10-CM diagnosis code (M36.4). |
| Includes | — | autoimmune disease NOS collagen (vascular) disease NOS systemic autoimmune disease systemic collagen (vascular) disease |
| Code first | — | underlying disease, such as: Henoch (-Schönlein) purpura (D69.0) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources