M61.3Calcification and ossification of muscles associated with burns

M61.3 is the ICD-10-CM diagnosis code for calcification and ossification of muscles associated with burns. It belongs to category M61 (calcification and ossification of muscle), block M60-M63 (disorders of muscles) 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 10 subcodes must be used instead.

Within M61 (calcification and ossification of muscle), M61.3 is specifically for calcification and ossification of muscles associated with burns. Related codes cover myositis ossificans traumatica (M61.0), myositis ossificans progressiva (M61.1), paralytic calcification and ossification of muscle (M61.2), other calcification of muscle (M61.4), other ossification of muscle (M61.5) and unspecified (M61.9).

To report this condition, pick the subcode that matches the documentation: M61.30 (unspecified site), M61.31 (shoulder), M61.32 (upper arm), M61.33 (forearm), M61.34 (hand), M61.35 (thigh), M61.36 (lower leg), M61.37 (ankle and foot) and 2 more.

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