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S33.100S vs S73

S33.100S (Subluxation of unspecified lumbar vertebra, sequela) compared with S73 (Dislocation and sprain of joint and ligaments of hip), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes can be reported together when both conditions are documented, because S33.100S lists S73 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named and billing status.S33.100S is “Subluxation of unspecified lumbar vertebra, sequela”; S73 is “Dislocation and sprain of joint and ligaments of hip”. S73 is a non-billable header; S33.100S is billable.

Registry fact

Can these codes be reported together?

Yes, when both are documented.S33.100S lists S73 under Excludes2: “dislocation and sprain of joints and ligaments of hip (S73.-)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. S33.100S carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

Yes.S33.100S’s tabular entry: “dislocation and sprain of joints and ligaments of hip (S73.-)”. The note covers S73.

Official ruleGuide: Excludes1 vs Excludes2

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

One is a header.S73 is a non-billable header, but S33.100S is not one of its subdivisions.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

S33.100S
Subluxation of unspecified lumbar vertebra, sequela
↔
S73
Dislocation and sprain of joint and ligaments of hip

What we found

Yes, when both are documented.S33.100S carries an Excludes2 note covering S73: “dislocation and sprain of joints and ligaments of hip (S73.-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2027

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

S33.100SSubluxation of unspecified lumbar vertebra, sequelaS73Dislocation and sprain of joint and ligaments of hip
Billing statusBillableNon-billable header

Report instead: S73.001A, S73.001D, S73.001S, S73.002A, S73.002D

ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionSubluxation of unspecified lumbar vertebra, sequela is a billable ICD-10-CM diagnosis code (S33.100S).Dislocation and sprain of joint and ligaments of hip is a non-billable ICD-10-CM category code (S73).
7th characterThe appropriate 7th character is to be added to each code from category S33The appropriate 7th character is to be added to each code from category S73
Includes
avulsion of joint or ligament of lumbar spine and pelvis
laceration of cartilage, joint or ligament of lumbar spine and pelvis
sprain of cartilage, joint or ligament of lumbar spine and pelvis
traumatic hemarthrosis of joint or ligament of lumbar spine and pelvis
avulsion of joint or ligament of hip
laceration of cartilage, joint or ligament of hip
sprain of cartilage, joint or ligament of hip
traumatic hemarthrosis of joint or ligament of hip
Excludes1
nontraumatic rupture or displacement of lumbar intervertebral disc NOS (M51.-)
obstetric damage to pelvic joints and ligaments (O71.6)
—
Excludes2
fracture of lumbar vertebrae (S32.0-)
dislocation and sprain of joints and ligaments of hip (S73.-)
strain of muscle of lower back and pelvis (S39.01-)
burns and corrosions (T20-T32)
effects of foreign body in anus and rectum (T18.5)
effects of foreign body in genitourinary tract (T19.-)
effects of foreign body in stomach, small intestine and colon (T18.2-T18.4)
frostbite (T33-T34)
insect bite or sting, venomous (T63.4)
strain of muscle, fascia and tendon of hip and thigh (S76.-)
burns and corrosions (T20-T32)
frostbite (T33-T34)
snake bite (T63.0-)
venomous insect bite or sting (T63.4-)
Code also
any associated:
open wound of abdomen, lower back and pelvis (S31)
spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-)
any associated open wound
any associated open wound

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources