Skip to main content

M26.633 vs S03.0

M26.633 (Articular disc disorder of bilateral temporomandibular joint) compared with S03.0 (Dislocation of jaw), 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 M26.633 lists S03.0 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named, billing status and chapter.M26.633 is “Articular disc disorder of bilateral temporomandibular joint”; S03.0 is “Dislocation of jaw”. S03.0 is a non-billable header; M26.633 is billable. M26.633 sits in M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99); S03.0 in S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

Registry fact

Can these codes be reported together?

Yes, when both are documented.M26.633 lists S03.0 under Excludes2: “current temporomandibular joint dislocation (S03.0)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes2 relationship?

Yes.M26.633’s tabular entry: “current temporomandibular joint dislocation (S03.0)”. The note covers S03.0.

Official ruleGuide: Excludes1 vs Excludes2

Is one a parent or header code?

One is a header.S03.0 is a non-billable header, but M26.633 is not one of its subdivisions.

Registry fact

Nothing found in 3 other checks; 1 check does not apply
Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. M26.633 carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.

Official rule

Is one more specific?

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

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

M26.633
Articular disc disorder of bilateral temporomandibular joint
↔
S03.0
Dislocation of jaw

What we found

Yes, when both are documented.M26.633 carries an Excludes2 note covering S03.0: “current temporomandibular joint dislocation (S03.0)”

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

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
M26.633

Articular disc disorder of bilateral temporomandibular joint

S03.0

Dislocation of jaw

StatusDiffers
M26.633
Billable
S03.0
Non-billable header

A header is not reported on a claim; a code beneath it is.

Report instead: S03.00XA, S03.00XD, S03.00XS, S03.01XA, S03.01XD

Excludes1Differs
M26.633
  • hemifacial atrophy or hypertrophy (Q67.4)
  • unilateral condylar hyperplasia or hypoplasia (M27.8)
S03.0

None at this code

Excludes2Differs
M26.633
  • current temporomandibular joint dislocation (S03.0)
  • current temporomandibular joint sprain (S03.4)
S03.0
  • Strain of muscle or tendon of head (S09.1)
  • burns and corrosions (T20-T32)
  • effects of foreign body in ear (T16)
  • effects of foreign body in larynx (T17.3)
  • effects of foreign body in mouth NOS (T18.0)
  • effects of foreign body in nose (T17.0-T17.1)
  • effects of foreign body in pharynx (T17.2)
  • effects of foreign body on external eye (T15.-)
  • frostbite (T33-T34)
  • insect bite or sting, venomous (T63.4)
Code alsoDiffers
M26.633

None at this code

S03.0
  • any associated open wound
  • for any associated infection
CategoryDiffers
M26.633

M26 Dentofacial anomalies [including malocclusion]

S03.0

S03 Dislocation and sprain of joints and ligaments of head

ChapterDiffers
M26.633

M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)

S03.0

S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)

IncludesDiffers
M26.633

None at this code

S03.0
  • avulsion of joint (capsule) or ligament of head
  • laceration of cartilage, joint (capsule) or ligament of head
  • sprain of cartilage, joint (capsule) or ligament of head
  • traumatic hemarthrosis of joint or ligament of head
  • traumatic rupture of joint or ligament of head
  • traumatic subluxation of joint or ligament of head
  • traumatic tear of joint or ligament of head
  • injuries of ear
  • injuries of eye
  • injuries of face [any part]
  • injuries of gum
  • injuries of jaw
  • injuries of oral cavity
  • injuries of palate
  • injuries of periocular area
  • injuries of scalp
  • injuries of temporomandibular joint area
  • injuries of tongue
  • injuries of tooth
  • Dislocation of jaw (cartilage) (meniscus)
  • Dislocation of mandible
  • Dislocation of temporomandibular (joint)
7th characterDiffers
M26.633

None at this code

S03.0
  • The appropriate 7th character is to be added to each code from category S03

No Code first and Use additional code note at either code.

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. In a row that differs, each code’s own notes are listed under it, and the notes every code shares are listed once beneath them.

Edit this comparisonCheck a whole claim

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