ICD-10 Code
International Classification of Diseases, 10th Revision
Nov 16, 2018

See: Laceration of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level

  ICD-10 Code for Laceration of extensor muscle, fascia & tendon of left index finger at wrist & hand level S66.321

S66.321 is a valid1 ICD 10 diagnosis code.

S66.321 is NOT valid for submission for HIPAA-covered transactions.

Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
Section S60-S69 Injuries to the wrist, hand and fingers (S60-S69)
Category S66 Injury of muscle, fascia and tendon at wrist and hand level

• See below for any additional coding requirements that may be necessary.

• Check for any notations, inclusions and/or exclusions that are specific to this ICD 10 code before using

1 The appropriate 7th character is to be added along with any placeholders (X) necessary to establish a 7-digit ICD 10 code.
  • S66.321A - Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level
    Use this code for initial encounter
  • S66.321D - Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level
    Use this code for subsequent encounter
  • S66.321S - Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level
    Use this code for sequela

Questions related to S66.321 Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level

When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.