ICD-10-CM > M00-M99 > M60-M63 > M61 > M61.3 > M61.31 M61.31 Calcification and ossification of muscles associated with burns, shoulder Non-Billable/Non-Specific Codes M61.311Calcification and ossification of muscles associated with burns, right shoulderM61.312Calcification and ossification of muscles associated with burns, left shoulderM61.319Calcification and ossification of muscles associated with burns, unspecified shoulder