Billable / Specific Code
ICD-10-CM M66.231 is the diagnosis code for Spontaneous rupture of extensor tendons, right forearm. This code falls under the section "Disorders of synovium and tendon" 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 M66.231 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, M66.231 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
M66.231 is the ICD-10-CM diagnosis code for "Spontaneous rupture of extensor tendons, right forearm". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of M66.231 is M66.23 ("Spontaneous rupture of extensor tendons, forearm"). M66.231 provides a more specific classification within this category.
M66.231 is located in Section M65-M67 — "Disorders of synovium and tendon" within Chapter 13 of the ICD-10-CM Tabular List.
Use M66.231 when the patients documented diagnosis matches "Spontaneous rupture of extensor tendons, right forearm" 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 Spontaneous rupture of extensor tendons, right forearm is M66.231.
Yes, M66.231 can be used as a primary diagnosis code since it is billable and specific.
M66.231 is in Chapter 13 of the ICD-10-CM Tabular List.
Yes, M66.231 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.