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  2. ICD-10-CM Codes List
  3. S00–T88
  4. S20-S29
  5. Injury of heart (S26)

Injury of heart (S26)

ICD-10 code S26 covers various types of injuries to the heart, including contusions, lacerations, and unspecified trauma, both with and without hemopericardium. These codes specify the nature and severity of the heart injury, the presence of blood in the pericardial sac (hemopericardium), and the stage of medical care such as initial encounter or sequela.

This section is used to classify detailed heart injuries, helping differentiate conditions like heart injury with hemopericardium; sometimes called traumatic hemopericardium or closed heart injury with hemopericardium; from those without blood accumulation around the heart. It also distinguishes injuries by severity, for example, mild, moderate, and major lacerations. The codes include specific seventh-character extensions to indicate initial treatment, follow-up visits, and complications or late effects. Synonyms like heart injury, closed, contusion to heart, or perforation of cardiac wall connect clinical terminology to the appropriate ICD-10 code, ensuring accurate use for medical coding and billing related to traumatic cardiac conditions.

  • Injury, poisoning and certain other consequences of external causes (S00–T88)

    • Injuries to the thorax (S20-S29)

        • Injury of heart (S26)

        • S26 Injury of heart
        • S26.0 Injury of heart with hemopericardium
        • S26.00 Unspecified injury of heart with hemopericardium
        • S26.00XA Unspecified injury of heart with hemopericardium, initial encounter
        • S26.00XD Unspecified injury of heart with hemopericardium, subsequent encounter
        • S26.00XS Unspecified injury of heart with hemopericardium, sequela
        • S26.01 Contusion of heart with hemopericardium
        • S26.01XA Contusion of heart with hemopericardium, initial encounter
        • S26.01XD Contusion of heart with hemopericardium, subsequent encounter
        • S26.01XS Contusion of heart with hemopericardium, sequela
        • S26.02 Laceration of heart with hemopericardium
        • S26.020 Mild laceration of heart with hemopericardium
        • S26.020A Mild laceration of heart with hemopericardium, initial encounter
        • S26.020D Mild laceration of heart with hemopericardium, subsequent encounter
        • S26.020S Mild laceration of heart with hemopericardium, sequela
        • S26.021 Moderate laceration of heart with hemopericardium
        • S26.021A Moderate laceration of heart with hemopericardium, initial encounter
        • S26.021D Moderate laceration of heart with hemopericardium, subsequent encounter
        • S26.021S Moderate laceration of heart with hemopericardium, sequela
        • S26.022 Major laceration of heart with hemopericardium
        • S26.022A Major laceration of heart with hemopericardium, initial encounter
        • S26.022D Major laceration of heart with hemopericardium, subsequent encounter
        • S26.022S Major laceration of heart with hemopericardium, sequela
        • S26.09 Other injury of heart with hemopericardium
        • S26.09XA Other injury of heart with hemopericardium, initial encounter
        • S26.09XD Other injury of heart with hemopericardium, subsequent encounter
        • S26.09XS Other injury of heart with hemopericardium, sequela
        • S26.1 Injury of heart without hemopericardium
        • S26.10 Unspecified injury of heart without hemopericardium
        • S26.10XA Unspecified injury of heart without hemopericardium, initial encounter
        • S26.10XD Unspecified injury of heart without hemopericardium, subsequent encounter
        • S26.10XS Unspecified injury of heart without hemopericardium, sequela
        • S26.11 Contusion of heart without hemopericardium
        • S26.11XA Contusion of heart without hemopericardium, initial encounter
        • S26.11XD Contusion of heart without hemopericardium, subsequent encounter
        • S26.11XS Contusion of heart without hemopericardium, sequela
        • S26.12 Laceration of heart without hemopericardium
        • S26.12XA Laceration of heart without hemopericardium, initial encounter
        • S26.12XD Laceration of heart without hemopericardium, subsequent encounter
        • S26.12XS Laceration of heart without hemopericardium, sequela
        • S26.19 Other injury of heart without hemopericardium
        • S26.19XA Other injury of heart without hemopericardium, initial encounter
        • S26.19XD Other injury of heart without hemopericardium, subsequent encounter
        • S26.19XS Other injury of heart without hemopericardium, sequela
        • S26.9 Injury of heart, unspecified with or without hemopericardium
        • S26.90 Unspecified injury of heart, unspecified with or without hemopericardium
        • S26.90XA Unspecified injury of heart, unspecified with or without hemopericardium, initial encounter
        • S26.90XD Unspecified injury of heart, unspecified with or without hemopericardium, subsequent encounter
        • S26.90XS Unspecified injury of heart, unspecified with or without hemopericardium, sequela
        • S26.91 Contusion of heart, unspecified with or without hemopericardium
        • S26.91XA Contusion of heart, unspecified with or without hemopericardium, initial encounter
        • S26.91XD Contusion of heart, unspecified with or without hemopericardium, subsequent encounter
        • S26.91XS Contusion of heart, unspecified with or without hemopericardium, sequela
        • S26.92 Laceration of heart, unspecified with or without hemopericardium
        • S26.92XA Laceration of heart, unspecified with or without hemopericardium, initial encounter
        • S26.92XD Laceration of heart, unspecified with or without hemopericardium, subsequent encounter
        • S26.92XS Laceration of heart, unspecified with or without hemopericardium, sequela
        • S26.99 Other injury of heart, unspecified with or without hemopericardium
        • S26.99XA Other injury of heart, unspecified with or without hemopericardium, initial encounter
        • S26.99XD Other injury of heart, unspecified with or without hemopericardium, subsequent encounter
        • S26.99XS Other injury of heart, unspecified with or without hemopericardium, sequela

Instructional Notations

Code Also

A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.

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

7th Character Note

Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.

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

7th Character

Indicates that a seventh character is to be assigned to codes in a subcategory.

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

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Pericardium

A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.

Pneumopericardium

Presence of air or gas in the space between the heart and the PERICARDIUM. The degree of respiratory distress depends on the amount of trapped air and circulation blocked in the systemic and pulmonary veins.