Is S02.40DK a billable ICD-10-CM code?

Yes. S02.40DK is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S02.40DK sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the head (S00-S09).

S02.40DK

S02.40DK — Maxillary fracture, left side, subsequent encounter for fracture with nonunion

Billable / specific codeICD-10-CMPOA exemptleft

S02.40DK is a billable, specific ICD-10-CM code for maxillary fracture, left side, subsequent encounter for fracture with nonunion. It is valid for submission on a claim.

7th character "K" — subsequent encounter for fracture with nonunion

The appropriate 7th character is to be added to each code from category S02

A: initial encounter for closed fracture
B: initial encounter for open fracture
D: subsequent encounter for fracture with routine healing
G: subsequent encounter for fracture with delayed healing
K: subsequent encounter for fracture with nonunion
S: sequela

Other codes that can never be billed with S02.40DK

These codes carry an Excludes1 note pointing at S02.40DK. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S02.40DK alone.

S01Open wound of head

Risk adjustment

S02.40DK 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.

Medicare coverage

S02.40DK is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56612Billing and Coding: CT of the Head
A56729Billing and Coding: Magnetic Resonance Imaging of the Head and Neck
A57204Billing and Coding: MRI and CT Scans of the Head and Neck

Code history

S02.40DK has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share S02.40D. If S02.40DK is not quite right, the correct code is usually one of these.

Questions about S02.40DK

Is S02.40DK a billable ICD-10-CM code?: Yes. S02.40DK is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S02.40DK sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the head (S00-S09).