ICD-10-CM > M00-M99 > M65-M67 > M66 > M66.8 M66.8 Spontaneous rupture of other tendons Non-Billable/Non-Specific Codes M66.80Spontaneous rupture of other tendons, unspecified siteM66.81Spontaneous rupture of other tendons, shoulderM66.811Spontaneous rupture of other tendons, right shoulderM66.812Spontaneous rupture of other tendons, left shoulderM66.819Spontaneous rupture of other tendons, unspecified shoulderM66.82Spontaneous rupture of other tendons, upper armM66.821Spontaneous rupture of other tendons, right upper armM66.822Spontaneous rupture of other tendons, left upper armM66.829Spontaneous rupture of other tendons, unspecified upper armM66.83Spontaneous rupture of other tendons, forearmM66.831Spontaneous rupture of other tendons, right forearmM66.832Spontaneous rupture of other tendons, left forearmM66.839Spontaneous rupture of other tendons, unspecified forearmM66.84Spontaneous rupture of other tendons, handM66.841Spontaneous rupture of other tendons, right handM66.842Spontaneous rupture of other tendons, left handM66.849Spontaneous rupture of other tendons, unspecified handM66.85Spontaneous rupture of other tendons, thighM66.851Spontaneous rupture of other tendons, right thighM66.852Spontaneous rupture of other tendons, left thighM66.859Spontaneous rupture of other tendons, unspecified thighM66.86Spontaneous rupture of other tendons, lower legM66.861Spontaneous rupture of other tendons, right lower legM66.862Spontaneous rupture of other tendons, left lower legM66.869Spontaneous rupture of other tendons, unspecified lower legM66.87Spontaneous rupture of other tendons, ankle and footM66.871Spontaneous rupture of other tendons, right ankle and footM66.872Spontaneous rupture of other tendons, left ankle and footM66.879Spontaneous rupture of other tendons, unspecified ankle and footM66.88Spontaneous rupture of other tendons, other sitesM66.89Spontaneous rupture of other tendons, multiple sites