ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.4 > M05.45 M05.45 Rheumatoid myopathy with rheumatoid arthritis of hip Non-Billable/Non-Specific Codes M05.451Rheumatoid myopathy with rheumatoid arthritis of right hipM05.452Rheumatoid myopathy with rheumatoid arthritis of left hipM05.459Rheumatoid myopathy with rheumatoid arthritis of unspecified hip