Billable / Specific Code
ICD-10-CM S66.518 is the diagnosis code for Strain of intrinsic muscle, fascia and tendon of other finger at wrist and hand level. This code falls under the section "Injuries to the wrist, hand and fingers" 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.
Understanding where S66.518 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, S66.518 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
S66.518 is the ICD-10-CM diagnosis code for "Strain of intrinsic muscle, fascia and tendon of other finger at wrist and hand level". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of S66.518 is S66.51 ("Strain of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level"). S66.518 provides a more specific classification within this category.
S66.518 is located in Section S60-S69 — "Injuries to the wrist, hand and fingers" within Chapter 19 of the ICD-10-CM Tabular List.
S66.518 has 1918 sub-code(s) that provide more specific detail: A00, A01, A02, A03, A04 and more.
Use S66.518 when the patients documented diagnosis matches "Strain of intrinsic muscle, fascia and tendon of other finger at wrist and hand 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 Strain of intrinsic muscle, fascia and tendon of other finger at wrist and hand level is S66.518.
Yes, S66.518 can be used as a primary diagnosis code since it is billable and specific.
S66.518 is in Chapter 19 of the ICD-10-CM Tabular List.
Yes, S66.518 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.