2027 ICD-10-CM Diagnosis Code S26Injury of heart

ICD-10-CM Codes›S00–T88›S20-S29›S26

ICD-10-CM S26
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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
Short Description
Injury of heart
Same as the full description in the CMS dataset.
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 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to S26: its own notes plus those printed at block S20-S29 and Chapter 19. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Block S20-S29 Injuries to the thorax applies to 1,602 codes
  • injuries of breast
  • injuries of chest (wall)
  • injuries of interscapular area

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block S20-S29 Injuries to the thorax applies to 1,602 codes
  • burns and corrosions (T20-T32)
  • effects of foreign body in bronchus (T17.5)
  • effects of foreign body in esophagus (T18.1)
  • effects of foreign body in lung (T17.8)
  • effects of foreign body in trachea (T17.4)
  • frostbite (T33-T34)
  • injuries of axilla
  • injuries of clavicle
  • injuries of scapular region
  • injuries of shoulder
  • insect bite or sting, venomous (T63.4)
From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • code to identify any retained foreign body, if applicable (Z18.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

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

Notes

General instructions on how these codes are used.

From Chapter 19 (S00-T88) Injury, poisoning and certain other consequences of external causes applies to 41,187 codes
  • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

7th Character

Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.

  • The appropriate 7th character is to be added to each code from category S26
Values for category S26 Encounter: Initial, Subsequent, Sequela
  • Ainitial encounter
  • Dsubsequent encounter
  • Ssequela

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name S26, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming S26: they are not reported together with it, unless the two conditions are unrelated.

  • I31 Other diseases of pericardium
    traumatic injury to pericardium (S26.-)
  • I5A Non-ischemic myocardial injury (non-traumatic)
    injury of heart (S26.-)

Code Also 1

These codes say S26 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • S21 Open wound of thorax
    injury of heart (S26.-)

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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About S26Overview

What is the ICD-10 code for injury of heart?

S26 is the ICD-10-CM category for injury of heart, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

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.