S66.319 — Strain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level
S66.319 is a non-billable header ICD-10-CM code for strain of extensor muscle, fascia and tendon of unspecified 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
Risk adjustment
S66.319 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 S66.319 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 S66.319.
- Injury›muscle›finger›extensor›hand level›strain
Code to one of these instead S66.319
3 child codes. Green means billable.
- S66.319AStrain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, initial encounter
- S66.319DStrain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, subsequent encounter
- S66.319SStrain of extensor muscle, fascia and tendon of unspecified finger at wrist and hand level, sequela
Related codes at this level
Codes that share S66.31. If S66.319 is not quite right, the correct code is usually one of these.
- S66.310Strain of extensor muscle, fascia and tendon of right index finger at wrist and hand level
- S66.311Strain of extensor muscle, fascia and tendon of left index finger at wrist and hand level
- S66.312Strain of extensor muscle, fascia and tendon of right middle finger at wrist and hand level
- S66.313Strain of extensor muscle, fascia and tendon of left middle finger at wrist and hand level
- S66.314Strain of extensor muscle, fascia and tendon of right ring finger at wrist and hand level
- S66.315Strain of extensor muscle, fascia and tendon of left ring finger at wrist and hand level
- S66.316Strain of extensor muscle, fascia and tendon of right little finger at wrist and hand level
- S66.317Strain of extensor muscle, fascia and tendon of left little finger at wrist and hand level
- S66.318Strain of extensor muscle, fascia and tendon of other finger at wrist and hand level
Questions about S66.319
- Is S66.319 a billable ICD-10-CM code?
- No. S66.319 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does S66.319 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).