T79.4 – Traumatic shock
ICD-10-CM 2027 diagnosis code · Certain early complications of trauma (T79)
- Code
T79.4(claims format:T794)- Description
- Traumatic shock
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 19. Injury, poisoning and certain other consequences of external causes (S00-T88)
- Block
- T79 Certain early complications of trauma (T79)
- Parent codes
- T79
Billable codes under T79.4
T79.4 is a header code and cannot be used on claims. Choose the most specific code:
7th character values
Codes in this category need a 7th character to describe the encounter or episode of care (use placeholder X for empty positions).
| Character | Meaning |
|---|---|
A | initial encounter |
D | subsequent encounter |
S | sequela |
Notes for T79.4
- Shock (immediate) (delayed) following injury
- anaphylactic shock due to adverse food reaction (T78.0-)
- anaphylactic shock due to correct medicinal substance properly administered (T88.6)
- anaphylactic shock due to serum (T80.5-)
- anaphylactic shock NOS (T78.2)
- electric shock (T75.4)
- nontraumatic shock NEC (R57.-)
- obstetric shock (O75.1)
- postprocedural shock (T81.1-)
- septic shock (R65.21)
- shock complicating abortion or ectopic or molar pregnancy (O00-O07, O08.3)
- shock due to anesthesia (T88.2)
- shock due to lightning (T75.01)
- shock NOS (R57.9)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
T79 – Certain early complications of trauma, not elsewhere classified
- The appropriate 7th character is to be added to each code from category T79
Index terms for T79.4
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Syndrome, shock
- Shock, traumatic
- Hypovolemia, traumatic
- Shock, following, injury
- Shock, hemorrhagic, trauma
- Shock, hypovolemic, traumatic
- Shock, pleural, due to trauma
- Feeble rapid pulse due to shock following injury
- Pulse, feeble, rapid due to shock following injury
- Rapid, feeble pulse, due to shock, following injury
- Decrease, respiration, due to shock following injury
- Respiration, decreased due to shock, following injury
- Blood, pressure, decreased, due to shock following injury
- Decrease, blood, pressure, due to shock following, injury
Related codes in T79
- T79.0 – Air embolism (traumatic)Header
- T79.1 – Fat embolism (traumatic)Header
- T79.2 – Traumatic secondary and recurrent hemorrhage and seromaHeader
- T79.5 – Traumatic anuriaHeader
- T79.6 – Traumatic ischemia of muscleHeader
- T79.7 – Traumatic subcutaneous emphysemaHeader
- T79.A – Traumatic compartment syndromeHeader
- T79.8 – Other early complications of traumaHeader
- T79.9 – Unspecified early complication of traumaHeader
Frequently asked questions
What is ICD-10 code T79.4?
T79.4 is the ICD-10-CM code for traumatic shock, in the block T79 (Certain early complications of trauma (T79)).
Is T79.4 a billable code?
No. T79.4 is a header code with more specific child codes; report one of the billable codes listed above.
What category does T79.4 belong to?
It belongs to category T79 – Certain early complications of trauma, not elsewhere classified.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.