M40
M40 — Kyphosis and lordosis
Non-billable headerICD-10-CM
M40 is a non-billable header ICD-10-CM code for kyphosis and lordosis. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Code first
The underlying condition must be sequenced before this code.
- underlying disease
Other codes that can never be billed with M40
These codes carry an Excludes1 note pointing at M40. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M40 alone.
- M42.0Juvenile osteochondrosis of spine
Risk adjustment
M40 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 M40
6 child codes. Green means billable.
Questions about M40
- Is M40 a billable ICD-10-CM code?
- No. M40 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does M40 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Deforming dorsopathies (M40-M43).
- What cannot be coded together with M40?
- M40 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.