ICD-10-CM › S00-T88 › S50-S59 › S56.42 Laceration of extensor muscle,... › S56.421
Laceration of extensor muscle, fascia and tendon of right index finger at forearm level
Not billableICD-10-CM diagnosis code.
This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.
Submit one of these 3 more specific codes instead:
- S56.421A Laceration of extensor muscle, fascia and tendon of right index finger at forearm level, initial encounter
- S56.421D Laceration of extensor muscle, fascia and tendon of right index finger at forearm level, subsequent encounter
- S56.421S Laceration of extensor muscle, fascia and tendon of right index finger at forearm level, sequela
This code requires a seventh character. See the rule below.
What has happened to this code
Every change the publisher made, from 2014 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2014 Added to the draft code set draft Laceration of extensor muscle, fascia and tendon of right index finger at forearm level
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from S56 Injury of muscle, fascia and tendon at forearm level
Seventh character required
- The appropriate 7th character is to be added to each code from category S56
Excludes2 - not included here
- injury of muscle, fascia and tendon at or below wrist (S66.-)
- sprain of joints and ligaments of elbow (S53.4-)
Code also
- any associated open wound (S51.-)
Inherited from the S50-S59 section Injuries to the elbow and forearm (S50-S59)
Excludes2 - not included here
- burns and corrosions (T20-T32)
- frostbite (T33-T34)
- injuries of wrist and hand (S60-S69)
- insect bite or sting, venomous (T63.4)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Cut > muscle
- Injury > fascia
- Injury > tendon
- Strain > muscle
- Strain > tendon
- Avulsion > muscle
- Avulsion > tendon
- Division > muscle
- Laceration > muscle
- Laceration > tendon
- Tear, torn > muscle
- Tear, torn > tendon
- Injury > leg > muscle
- Injury > finger > muscle
- Rupture, ruptured > muscle
- Rupture, ruptured > tendon
- Injury > muscle > flexor > finger
- Injury > muscle > extensor > finger
- Injury > muscle > intrinsic > finger
- Rupture, ruptured > muscle > traumatic
- Injury > muscle > leg > posterior muscle group
- Rupture, ruptured > traumatic > muscle or tendon
- Injury > muscle > finger > ring > extensor > laceration
- Injury > muscle > finger > little > extensor > laceration
- Injury > muscle > finger > middle > extensor > laceration
Codes in the same group
| Code | Description | Status |
|---|---|---|
| S56.422 | Laceration of extensor muscle, fascia and tendon of left index finger at forearm level | Not billable |
| S56.423 | Laceration of extensor muscle, fascia and tendon of right middle finger at forearm level | Not billable |
| S56.424 | Laceration of extensor muscle, fascia and tendon of left middle finger at forearm level | Not billable |
| S56.425 | Laceration of extensor muscle, fascia and tendon of right ring finger at forearm level | Not billable |
| S56.426 | Laceration of extensor muscle, fascia and tendon of left ring finger at forearm level | Not billable |
| S56.427 | Laceration of extensor muscle, fascia and tendon of right little finger at forearm level | Not billable |
| S56.428 | Laceration of extensor muscle, fascia and tendon of left little finger at forearm level | Not billable |
| S56.429 | Laceration of extensor muscle, fascia and tendon of unspecified finger at forearm level | Not billable |