M14.6 vs M36.1
M14.6 (Charcôt's joint) compared with M36.1 (Arthropathy in neoplastic disease), 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. M14.6 carries an Excludes1 note covering M36.1: “neoplastic disease (M36.1)”
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. M36.1 carries an Excludes2 note covering M14.6: “arthropathies in diseases classified elsewhere (M14.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| M14.6Charcôt's joint | M36.1Arthropathy in neoplastic disease | |
|---|---|---|
| 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 is a non-billable ICD-10-CM category code (M14.6). | Arthropathy in neoplastic disease is a billable ICD-10-CM diagnosis code (M36.1). |
| Includes | Neuropathic arthropathy | autoimmune disease NOS collagen (vascular) disease NOS systemic autoimmune disease systemic collagen (vascular) disease |
| Code first | — | underlying neoplasm, such as: leukemia (C91-C95) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources