S06.366Header code — not billable

Traumatic hemorrhage of cerebrum, unspecified, with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving

Short description: Traum hemor cereb, w LOC >24 hr w/o ret consc w surv

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
S06
Effective date
October 1, 2026

Related codes in category S06

S06Intracranial injuryS06.0ConcussionS06.0XConcussionS06.0X0Concussion without loss of consciousnessS06.0X0AConcussion without loss of consciousness, initial encounterYesS06.0X0DConcussion without loss of consciousness, subs encntrYesS06.0X0SConcussion without loss of consciousness, sequelaYesS06.0X1Concussion with loss of consciousness of 30 minutes or lessS06.0X1AConcussion w LOC of 30 minutes or less, initYesS06.0X1DConcussion w LOC of 30 minutes or less, subsYesS06.0X1SConcussion w LOC of 30 minutes or less, sequelaYesS06.0X9Concussion with loss of consciousness of unsp duration

Frequently asked questions

What is ICD-10 code S06.366?

S06.366 is an ICD-10-CM diagnosis code for Traumatic hemorrhage of cerebrum, unspecified, with loss of consciousness greater than 24 hours without return to pre-existing conscious level with patient surviving.

Is S06.366 a billable code?

No. S06.366 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is S06.366 in?

S06.366 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did S06.366 become effective?

S06.366 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to S06.366?

S06.366 belongs to category S06, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.