M1A.18 — Lead-induced chronic gout, vertebrae
M1A.18 is a non-billable header ICD-10-CM code for lead-induced chronic gout, vertebrae. 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)
Risk adjustment
M1A.18 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.
How M1A.18 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to M1A.18.
- Gout, chronic›lead-induced›vertebrae
Code to one of these instead M1A.18
2 child codes. Green means billable.
Related codes at this level
Codes that share M1A.1. If M1A.18 is not quite right, the correct code is usually one of these.
- M1A.10Lead-induced chronic gout, unspecified site
- M1A.11Lead-induced chronic gout, shoulder
- M1A.12Lead-induced chronic gout, elbow
- M1A.13Lead-induced chronic gout, wrist
- M1A.14Lead-induced chronic gout, hand
- M1A.15Lead-induced chronic gout, hip
- M1A.16Lead-induced chronic gout, knee
- M1A.17Lead-induced chronic gout, ankle and foot
- M1A.19Lead-induced chronic gout, multiple sites
Questions about M1A.18
- Is M1A.18 a billable ICD-10-CM code?
- No. M1A.18 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does M1A.18 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Inflammatory polyarthropathies (M05-M14).