S66.108 — Unspecified injury of flexor muscle, fascia and tendon of other finger at wrist and hand level
S66.108 is a non-billable header ICD-10-CM code for unspecified injury of flexor muscle, fascia and tendon of other finger at wrist and hand level. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category S66
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Unspecified injury of flexor muscle, fascia and tendon of specified finger with unspecified laterality at wrist and hand level
Risk adjustment
S66.108 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
How S66.108 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to S66.108.
- Injury›muscle›finger›index›flexor›hand level
Code to one of these instead S66.108
3 child codes. Green means billable.
- S66.108AUnspecified injury of flexor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
- S66.108DUnspecified injury of flexor muscle, fascia and tendon of other finger at wrist and hand level, subsequent encounter
- S66.108SUnspecified injury of flexor muscle, fascia and tendon of other finger at wrist and hand level, sequela
Related codes at this level
Codes that share S66.10. If S66.108 is not quite right, the correct code is usually one of these.
- S66.100Unspecified injury of flexor muscle, fascia and tendon of right index finger at wrist and hand level
- S66.101Unspecified injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level
- S66.102Unspecified injury of flexor muscle, fascia and tendon of right middle finger at wrist and hand level
- S66.103Unspecified injury of flexor muscle, fascia and tendon of left middle finger at wrist and hand level
- S66.104Unspecified injury of flexor muscle, fascia and tendon of right ring finger at wrist and hand level
- S66.105Unspecified injury of flexor muscle, fascia and tendon of left ring finger at wrist and hand level
- S66.106Unspecified injury of flexor muscle, fascia and tendon of right little finger at wrist and hand level
- S66.107Unspecified injury of flexor muscle, fascia and tendon of left little finger at wrist and hand level
- S66.109Unspecified injury of flexor muscle, fascia and tendon of unspecified finger at wrist and hand level
Questions about S66.108
- Is S66.108 a billable ICD-10-CM code?
- No. S66.108 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S66.108 sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the wrist, hand and fingers (S60-S69).