ICD-10-CM > M00-M99 > M60-M63 > M61 > M61.3 > M61.37 M61.37 Calcification and ossification of muscles associated with burns, ankle and foot Non-Billable/Non-Specific Codes M61.371Calcification and ossification of muscles associated with burns, right ankle and footM61.372Calcification and ossification of muscles associated with burns, left ankle and footM61.379Calcification and ossification of muscles associated with burns, unspecified ankle and foot