Billable / Specific Code
ICD-10-CM M26.642 is the diagnosis code for Arthritis of left temporomandibular joint. This code falls under the section "Dentofacial anomalies [including malocclusion] and other disorders of jaw" within Chapter 13 — Diseases of the musculoskeletal system and connective tissue (M00-M99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where M26.642 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, M26.642 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
M26.642 is the ICD-10-CM diagnosis code for "Arthritis of left temporomandibular joint". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of M26.642 is M26.64 ("Arthritis of temporomandibular joint"). M26.642 provides a more specific classification within this category.
M26.642 is located in Section M26-M27 — "Dentofacial anomalies [including malocclusion] and other disorders of jaw" within Chapter 13 of the ICD-10-CM Tabular List.
Use M26.642 when the patients documented diagnosis matches "Arthritis of left temporomandibular joint" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Arthritis of left temporomandibular joint is M26.642.
Yes, M26.642 can be used as a primary diagnosis code since it is billable and specific.
M26.642 is in Chapter 13 of the ICD-10-CM Tabular List.
Yes, M26.642 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.