M14.672 vs M36.4
M14.672 (Charcôt's joint, left 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. M14.672 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 M14.672: “arthropathies in diseases classified elsewhere (M14.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M14.672Charcôt's joint, left ankle and foot | M36.4Arthropathy in hypersensitivity reactions classified elsewhere | |
|---|---|---|
| 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 | Charcôt's joint, left ankle and foot is a billable ICD-10-CM diagnosis code (M14.672). | 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