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3. Chapter - M00-M99
4. Section - M05-M14
5. Category - M05
6. M05.661

M05.661 - Rheumatoid arthritis of right knee with involvement of other organs and systems

• Applicable to Rheumatoid arthritis of right knee with involvement of other organs and systems
• The 2025 edition of ICD10-CM M05.661 became effective on October 1, 2024.
• This is the American ICD10-CM version of M05.661 - other international versions of ICD10 M05.661 may differ.
• M05.661 is a Billable / Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

The following codes above M05.661 contain annotation back-references that may be applicable to M05.661:

• Chapter: M00-M99 - Diseases of the musculoskeletal system and connective tissue
• Section: M05-M14 - Inflammatory polyarthropathies
• Category: M05 - Rheumatoid arthritis with rheumatoid factor

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.