ICD10BillableValid for clinical use

ICD-10 Code M26.609: Unspecified temporomandibular joint disorder, unspecified side

M26.609 is a billable ICD-10 diagnosis code used to classify Unspecified temporomandibular joint disorder, unspecified side in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

When is it used?

  • May be used when a clinician documents unspecified temporomandibular joint disorder, unspecified side in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
13Diseases of the musculoskeletal system and connective tissue (M00-M99)
block
M26-M27Dentofacial anomalies [including malocclusion] and other disorders of jaw
category
M26Dentofacial anomalies [including malocclusion]
category
M26.6Temporomandibular joint disorders
category
M26.60Temporomandibular joint disorder, unspecified
currentM26.60

Official coding notes

Inclusion terms
  • Temporomandibular joint disorder NOS

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Orthopedic SpecialistRheumatologist

Coding guidelines

Common synonyms

Unspecified temporomandibular joint disorder, unspecified sideUnspecified temporomandibular joint disorder

Frequently asked questions

Code details

CodeM26.609
SystemICD10
Display nameUnspecified temporomandibular joint disorder, unspecified side
ChapterDiseases of the musculoskeletal system and connective tissue (M00-M99)
BlockDentofacial anomalies [including malocclusion] and other disorders of jaw

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code M26.609 for Unspecified temporomandibular joint disorder, unspecified side | HealthAssure