ICD-10-CM > M00-M99 > M65-M67 > M65 > M65.2 > M65.26 M65.26 Calcific tendinitis, lower leg Non-Billable/Non-Specific Codes M65.261Calcific tendinitis, right lower legM65.262Calcific tendinitis, left lower legM65.269Calcific tendinitis, unspecified lower leg