M1A.4691Billable
Other secondary chronic gout, unspecified knee, with tophus (tophi)
Short description: Other secondary chronic gout, unspecified knee, with tophus
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue
- Category
- M1A
- Effective date
- October 1, 2026
Related codes in category M1A
M1AChronic goutM1A.0Idiopathic chronic goutM1A.00Idiopathic chronic gout, unspecified siteM1A.00X0Idiopathic chronic gout, unspecified site, without tophusYesM1A.00X1Idiopathic chronic gout, unspecified site, with tophusYesM1A.01Idiopathic chronic gout, shoulderM1A.011Idiopathic chronic gout, right shoulderM1A.0110Idiopathic chronic gout, right shoulder, without tophusYesM1A.0111Idiopathic chronic gout, right shoulder, with tophus (tophi)YesM1A.012Idiopathic chronic gout, left shoulderM1A.0120Idiopathic chronic gout, left shoulder, without tophusYesM1A.0121Idiopathic chronic gout, left shoulder, with tophus (tophi)Yes
Frequently asked questions
What is ICD-10 code M1A.4691?
M1A.4691 is an ICD-10-CM diagnosis code for Other secondary chronic gout, unspecified knee, with tophus (tophi).
Is M1A.4691 a billable code?
Yes. M1A.4691 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is M1A.4691 in?
M1A.4691 falls under Chapter 13: Diseases of the musculoskeletal system and connective tissue.
When did M1A.4691 become effective?
M1A.4691 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to M1A.4691?
M1A.4691 belongs to category M1A, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.