ICD-10-CM > M00-M99 > M05-M14 > M05 > M05.1 > M05.12 M05.12 Rheumatoid lung disease with rheumatoid arthritis of elbow Non-Billable/Non-Specific Codes M05.121Rheumatoid lung disease with rheumatoid arthritis of right elbowM05.122Rheumatoid lung disease with rheumatoid arthritis of left elbowM05.129Rheumatoid lung disease with rheumatoid arthritis of unspecified elbow