The ICD-10 M05.79 is for rheumatoid arthritis of multiple sites without organ or systemic involvement. M25.561 is for pain in the right knee. Once a definitive diagnosis of osteoarthritis is confirmed, pain in the right knee should not be coded, because pain is an integral part of osteoarthritis.
For questions or additional information on coding and documentation guidelines, contact Melesia Tillman, CPC-I, CPC, CRHC, CHA, via email at [email protected] or call 404-633-3777 x820.