All ICD10 Codes

S66

Non-Billable
ChapterS00–T88
Rankcategory
Official Description

Injury of muscle, fascia and tendon at wrist and hand level

Use a more specific code (0 billable, 8 non-billable)
S66.0Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand levelhas subcodesS66.1Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelhas subcodesS66.2Injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelhas subcodesS66.3Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelhas subcodesS66.4Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand levelhas subcodesS66.5Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelhas subcodesS66.8Injury of other specified muscles, fascia and tendons at wrist and hand levelhas subcodesS66.9Injury of unspecified muscle, fascia and tendon at wrist and hand levelhas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

CH19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)

S60-S69 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)
  • sprain of joints and ligaments of wrist and hand (S63.-)
Code Also
  • any associated open wound (S61.-)

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
S60-S69Injuries to the wrist, hand and fingers (S60-S69)
S66Injury of muscle, fascia and tendon at wrist and hand levelNot billable
S66.0Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand levelSubcodes
S66.1Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelSubcodes
S66.2Injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelSubcodes
S66.3Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelSubcodes
S66.4Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand levelSubcodes
S66.5Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelSubcodes
S66.8Injury of other specified muscles, fascia and tendons at wrist and hand levelSubcodes
S66.9Injury of unspecified muscle, fascia and tendon at wrist and hand levelSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to S66:

blockS60-S69
Injuries to the wrist, hand and fingers (S60-S69)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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