Billable / Specific Code
ICD-10-CM S56.403 is the diagnosis code for Unspecified injury of extensor muscle, fascia and tendon of right middle finger at forearm level. This code falls under the section "Injuries to the elbow and forearm" within Chapter 19 — Injury, poisoning and certain other consequences of external causes (S00-T88). 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 S56.403 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, S56.403 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
S56.403 is the ICD-10-CM diagnosis code for "Unspecified injury of extensor muscle, fascia and tendon of right middle finger at forearm level". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of S56.403 is S56.40 ("Unspecified injury of extensor muscle, fascia and tendon of other and unspecified finger at forearm level"). S56.403 provides a more specific classification within this category.
S56.403 is located in Section S50-S59 — "Injuries to the elbow and forearm" within Chapter 19 of the ICD-10-CM Tabular List.
Use S56.403 when the patients documented diagnosis matches "Unspecified injury of extensor muscle, fascia and tendon of right middle finger at forearm level" 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 Unspecified injury of extensor muscle, fascia and tendon of right middle finger at forearm level is S56.403.
Yes, S56.403 can be used as a primary diagnosis code since it is billable and specific.
S56.403 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, S56.403 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.