MCMCB Pro
S26

S26Injury of heart

Non-billable headerICD-10-CM

S26 is a non-billable header ICD-10-CM code for injury of heart. 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 S26

A
initial encounter
D
subsequent encounter
S
sequela

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

  • any associated:
  • open wound of thorax (S21.-)
  • traumatic hemopneumothorax (S27.2)
  • traumatic hemothorax (S27.1)
  • traumatic pneumothorax (S27.0)

Other codes that can never be billed with S26

These codes carry an Excludes1 note pointing at S26. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S26 alone.

  • I31Other diseases of pericardium
  • I5ANon-ischemic myocardial injury (non-traumatic)

Risk adjustment

S26 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 S26

3 child codes. Green means billable.

Questions about S26

Is S26 a billable ICD-10-CM code?
No. S26 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does S26 sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.