M1A.4
M1A.4 — Other secondary chronic gout
Non-billable headerICD-10-CM
M1A.4 is a non-billable header ICD-10-CM code for other secondary chronic gout. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category M1A
- 0
- without tophus (tophi)
- 1
- with tophus (tophi)
Code first
The underlying condition must be sequenced before this code.
- associated condition
Risk adjustment
M1A.4 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead M1A.4
10 child codes. Green means billable.
- M1A.40Other secondary chronic gout, unspecified site
- M1A.41Other secondary chronic gout, shoulder
- M1A.42Other secondary chronic gout, elbow
- M1A.43Other secondary chronic gout, wrist
- M1A.44Other secondary chronic gout, hand
- M1A.45Other secondary chronic gout, hip
- M1A.46Other secondary chronic gout, knee
- M1A.47Other secondary chronic gout, ankle and foot
- M1A.48Other secondary chronic gout, vertebrae
- M1A.49Other secondary chronic gout, multiple sites
Related codes at this level
Codes that share M1A. If M1A.4 is not quite right, the correct code is usually one of these.
Questions about M1A.4
- Is M1A.4 a billable ICD-10-CM code?
- No. M1A.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does M1A.4 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Inflammatory polyarthropathies (M05-M14).