S33.1Subluxation and dislocation of lumbar vertebra

S33.1 is the ICD-10-CM diagnosis code for subluxation and dislocation of lumbar vertebra. It belongs to category S33 (dislocation and sprain of joints and ligaments of lumbar spine and pelvis), block S30-S39 (injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within S33 (dislocation and sprain of joints and ligaments of lumbar spine and pelvis), S33.1 is specifically for subluxation and dislocation of lumbar vertebra. Related codes cover traumatic rupture of lumbar intervertebral disc (S33.0), dislocation of sacroiliac and sacrococcygeal joint (S33.2), dislocation of other and unspecified parts of lumbar spine and pelvis (S33.3), traumatic rupture of symphysis pubis (S33.4), sprain of ligaments of lumbar spine (S33.5), sprain of sacroiliac joint (S33.6), sprain of other parts of lumbar spine and pelvis (S33.8) and sprain of unspecified parts of lumbar spine and pelvis (S33.9).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

The conditions in its Excludes2 note aren't part of S33.1, but may be coded alongside it if the patient has both: fracture of lumbar vertebrae (S32.0-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.