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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-)

Excludes1 inherited from the categories above S33.1

A category’s note binds every code beneath it.

Written on S33: Dislocation and sprain of joints and ligaments of lumbar spine and pelvis

  • nontraumatic rupture or displacement of lumbar intervertebral disc NOS (M51.-)
  • obstetric damage to pelvic joints and ligaments (O71.6)

Excludes2 inherited from the categories above S33.1

Not part of this code, but both may be coded when both are present.

Written on S33: Dislocation and sprain of joints and ligaments of lumbar spine and pelvis

  • dislocation and sprain of joints and ligaments of hip (S73.-)
  • strain of muscle of lower back and pelvis (S39.01-)

Other codes that can never be billed with S33.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead S33.1

5 child codes. Green means billable.

Other codes under S33

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.