M36Systemic disorders of connective tissue in diseases classified elsewhere

M36 is the ICD-10-CM diagnosis code for systemic disorders of connective tissue in diseases classified elsewhere. It belongs to block M30-M36 (systemic connective tissue disorders) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 6 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M36.0 (disease), M36.1 (disease), M36.2 (arthropathy), M36.3 (disorders), M36.4 (elsewhere) and M36.8 (elsewhere).

The conditions in its Excludes2 note aren't part of M36, but may be coded alongside it if the patient has both: arthropathies in diseases classified elsewhere (M14.-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.