M61.56 Other ossification of muscle, lower legNon-billable header with 3 child codes.
M61.561 Other ossification of muscle, right lower legM61.562 Other ossification of muscle, left lower legM61.569 Other ossification of muscle, unspecified lower legM61.549 Other ossification of muscle, unspecified handM61.55 Other ossification of muscle, thighM61.551 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 leg (this code)M61.561 Other ossification of muscle, right lower legM61.562 Other ossification of muscle, left lower legM61.569 Other ossification of muscle, unspecified lower legM61.57 Other ossification of muscle, ankle and footM61.571 Other ossification of muscle, right ankle and foot