2026 ICD-10-CM Diagnosis Code S26Injury of heart

ICD-10-CM Codes›S00–T88›S20-S29›S26

ICD-10-CM S26
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S26 is a non-billable ICD-10-CM category code for injury of heart, so it cannot be submitted on claims. Use a more specific code from this category instead, such as S26.00XA, S26.00XD, S26.00XS, and S26.01XA.

Code Identity

ICD-10-CM Code
S26
Billable Status
No — Non-Billable Category
Code Describes
Injury of heart
Chapter
S20-S29
Injuries to the thorax

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS20-S29Injuries to the thorax
CategoryS26Injury of heart
This CodeS26Injury of heart

Specific Coding for Injury of heartOverview

Non-specific codes like S26 require more characters. Use one of these billable codes instead:

  • S26.0 for Injury of heart with hemopericardium

  • S26.00 for Unspecified injury of heart with hemopericardium

  • S26.01 for Contusion of heart with hemopericardium

  • S26.02 for Laceration of heart with hemopericardium

  • S26.09 for Other injury of heart with hemopericardium

  • S26.1 for Injury of heart without hemopericardium

  • S26.10 for Unspecified injury of heart without hemopericardium

  • S26.11 for Contusion of heart without hemopericardium

  • S26.12 for Laceration of heart without hemopericardium

  • S26.19 for Other injury of heart without hemopericardium

  • S26.9 for Injury of heart, unspecified with or without hemopericardium

  • S26.90 for Unspecified injury of heart, unspecified with or without hemopericardium

  • S26.91 for Contusion of heart, unspecified with or without hemopericardium

  • S26.92 for Laceration of heart, unspecified with or without hemopericardium

  • S26.99 for Other injury of heart, unspecified with or without hemopericardium

Coding GuidelinesGuidance

The appropriate 7th character is to be added to each code from block Injury of heart (S26). Use the following options for the applicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code Also

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

7th Character Note

  • The appropriate 7th character is to be added to each code from category S26

7th Character

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Patient EducationClinical

Chest Injuries and Disorders

The chest is the part of your body between your neck and your abdomen (belly). The medical term for your chest is thorax.

The full article covers:

  • What is the chest?
  • What are chest injuries and disorders?
  • How are chest injuries and disorders diagnosed?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About S26Overview

Is S26 (Injury of heart) a billable code?

No. This is a category header that groups the codes for injury of heart, and headers cannot be submitted on claims. Claims for injury of heart need a more specific code from this category, such as S26.00XA, S26.00XD, and S26.00XS.