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S66.598

⚠ Non-billable (Header)

Other injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level

Injury, poisoning and certain other consequences of external causes (S00-T88)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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Also Known As

Other injury of intrinsic muscle, fascia and tendon of specified finger with unspecified laterality at wrist and hand level

⚠️ Excludes2

inherited

Rules inherited from parent codes.

S66.5
  • • injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level (S66.4-)
S66
  • • sprain of joints and ligaments of wrist and hand (S63.-)

Child Codes (3)

S66.598AOther injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level, initial encounterS66.598DOther injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounterS66.598SOther injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level, sequela

Clinical Description

ICD-10-CM code S66.598 represents other injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 7-character code at the 6th level of specificity. There are 3 more specific child codes under S66.598.

Frequently Asked Questions

What is ICD-10 code S66.598?

ICD-10-CM code S66.598 is "Other injury of intrinsic muscle, fascia and tendon of other finger at wrist and hand level". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is S66.598 a billable ICD-10 code?

No, S66.598 is a non-billable header code. A more specific child code must be used for billing.

Can S66.598 be coded with other codes?

S66.598 has 2 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in S66.59

Other codes in the same category that may be relevant for differential coding:

S66.590Other injury of intrinsic muscle, fascia and tendon of right index finger at wrist and hand levelS66.591Other injury of intrinsic muscle, fascia and tendon of left index finger at wrist and hand levelS66.592Other injury of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand levelS66.593Other injury of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand levelS66.594Other injury of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand levelS66.595Other injury of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand levelS66.596Other injury of intrinsic muscle, fascia and tendon of right little finger at wrist and hand levelS66.597Other injury of intrinsic muscle, fascia and tendon of left little finger at wrist and hand levelS66.599Other injury of intrinsic muscle, fascia and tendon of unspecified finger at wrist and hand level

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Code Information

CodeS66.598
BillableNo — Header code
ParentS66.59
CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)
Excludes10 rule(s)
Excludes22 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)