M06.86 Other specified rheumatoid arthritis, kneeNon-billable header with 3 child codes.
M06.861 Other specified rheumatoid arthritis, right kneeM06.862 Other specified rheumatoid arthritis, left kneeM06.869 Other specified rheumatoid arthritis, unspecified kneeM06.849 Other specified rheumatoid arthritis, unspecified handM06.85 Other specified rheumatoid arthritis, hipM06.851 Other specified rheumatoid arthritis, right hipM06.852 Other specified rheumatoid arthritis, left hipM06.859 Other specified rheumatoid arthritis, unspecified hipM06.86 Other specified rheumatoid arthritis, knee (this code)M06.861 Other specified rheumatoid arthritis, right kneeM06.862 Other specified rheumatoid arthritis, left kneeM06.869 Other specified rheumatoid arthritis, unspecified kneeM06.87 Other specified rheumatoid arthritis, ankle and footM06.871 Other specified rheumatoid arthritis, right ankle and foot