M61.55 Other ossification of muscle, thighNon-billable header with 3 child codes.
M61.551 Other ossification of muscle, right thighM61.552 Other ossification of muscle, left thighM61.559 Other ossification of muscle, unspecified thighM61.539 Other ossification of muscle, unspecified forearmM61.54 Other ossification of muscle, handM61.541 Other ossification of muscle, right handM61.542 Other ossification of muscle, left handM61.549 Other ossification of muscle, unspecified handM61.55 Other ossification of muscle, thigh (this code)M61.551 Other ossification of muscle, right thighM61.552 Other ossification of muscle, left thighM61.559 Other ossification of muscle, unspecified thighM61.56 Other ossification of muscle, lower legM61.561 Other ossification of muscle, right lower leg