Is S33.1 a billable ICD-10-CM code?

No. S33.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does S33.1 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39).

S33.1

S33.1 — Subluxation and dislocation of lumbar vertebra

Non-billable headerICD-10-CM

S33.1 is a non-billable header ICD-10-CM code for subluxation and dislocation of lumbar vertebra. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category S33

A: initial encounter
D: subsequent encounter
S: sequela

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

fracture of lumbar vertebrae (S32.0-)

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

any associated:
open wound of abdomen, lower back and pelvis (S31)
spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)

Other codes that can never be billed with S33.1

These codes carry an Excludes1 note pointing at S33.1. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S33.1 alone.

M43.1Spondylolisthesis

Risk adjustment

S33.1 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead S33.1

5 child codes. Green means billable.

Related codes at this level

Codes that share S33. If S33.1 is not quite right, the correct code is usually one of these.

Questions about S33.1

Is S33.1 a billable ICD-10-CM code?: No. S33.1 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does S33.1 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals (S30-S39).