Search Browse Crosswalk Fees Tools Pricing

Codelle

AI-powered medical coding assistant for healthcare practices and billers.

Pricing Privacy Terms

© 2026 Codelle. All rights reserved.

CPT® copyright 2026 American Medical Association. All rights reserved. CPT is a registered trademark of the American Medical Association. Applicable FARS/DFARS restrictions apply to government use. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use.

ICD-10-CM S66.399 — Inj extensor musc/fasc/tend u… | Codelle

ICD-10-CM/S66.39/S66.399

S66.399

ICD-10-CM

Inj extensor musc/fasc/tend unsp finger at wrs/hnd lv

Other injury of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level

Code Hierarchy

▲S66.39Inj extensor musc/fasc/tend and unsp finger at wrs/hnd lv

S66.399(current)

Subcodes (3)

S66.399AInj extensor musc/fasc/tend unsp finger at wrs/hnd lv, init

S66.399DInj extensor musc/fasc/tend unsp finger at wrs/hnd lv, subs

S66.399SInj extn musc/fasc/tend unsp finger at wrs/hnd lv, sequela

Same Category

S66Injury of muscle, fascia and tendon at wrist and hand level S66.0Injury of long flexor musc/fasc/tend thumb at wrs/hnd lv S66.00Unsp inj long flexor musc/fasc/tend thumb at wrs/hnd lv S66.001Unsp inj long flexor musc/fasc/tend r thm at wrs/hnd lv S66.001AUnsp inj long flxr musc/fasc/tend r thm at wrs/hnd lv, init S66.001DUnsp inj long flxr musc/fasc/tend r thm at wrs/hnd lv, subs S66.001SUnsp inj long flxr musc/fasc/tend r thm at wrs/hnd lv, sqla S66.002Unsp inj long flexor musc/fasc/tend l thm at wrs/hnd lv S66.002AUnsp inj long flxr musc/fasc/tend l thm at wrs/hnd lv, init S66.002DUnsp inj long flxr musc/fasc/tend l thm at wrs/hnd lv, subs

+5 more in this category