S66.12
⚠ Non-billable
Laceration of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
S66.12
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code S66.12?
ICD-10-CM code S66.12 represents Laceration of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level. It is a non-billable header code requiring a more specific subcategory in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is S66.12 billable?
No. S66.12 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is S66.12 in?
S66.12 belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the S66 category
S66
Injury of muscle, fascia and tendon at wrist and hand level
Non-billable
S66.0
Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand level
Non-billable
S66.1
Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand level
Non-billable
S66.2
Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level
Non-billable
S66.3
Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level
Non-billable
S66.4
Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand level
Non-billable
S66.5
Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand level
Non-billable
S66.8
Injury of other specified muscles, fascia and tendons at wrist and hand level
Non-billable
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