M61.17Myositis ossificans progressiva, ankle, foot and toe(s)

M61.17 is the ICD-10-CM diagnosis code for myositis ossificans progressiva, ankle, foot and toe(s). 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 9 subcodes must be used instead.

Within M61.1 (myositis ossificans progressiva), M61.17 is specifically for myositis ossificans progressiva, ankle, foot and toe(s). Related codes cover unspecified site (M61.10), shoulder (M61.11), upper arm (M61.12), forearm (M61.13), hand and finger(s) (M61.14), thigh (M61.15), lower leg (M61.16), other site (M61.18) and 1 more.

To report this condition, pick the subcode that matches the documentation: M61.171 (ankle), M61.172 (ankle), M61.173 (ankle), M61.174 (foot), M61.175 (foot), M61.176 (foot), M61.177 (toe(s)), M61.178 (toe(s)) and 1 more.

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