M08.9

Clinical Information

• Rheumatoid arthritis of children occurring in three major subtypes defined by the symptoms present during the first six months following onset: systemic onset still’s disease, juvenile onset), polyarticular onset, and pauciarticular onset; adult onset cases of still’s disease still’s disease, adult onset) are also known; only one subtype of juvenile rheumatoid arthritis polyarticular onset, rheumatoid factor positive) clinically resembles adult rheumatoid arthritis and is considered its childhood equivalent.

Details

• M08.9 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.

• The 2023 edition of ICD-10-CM M08.9 became effective on October 1, 2022.

• This is the American ICD-10-CM version of M08.9 – other international versions of ICD-10 M08.9 may differ.