Is S56 a billable ICD-10-CM code?

No. S56 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does S56 sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the elbow and forearm (S50-S59).

S56

S56 — Injury of muscle, fascia and tendon at forearm level

Non-billable headerICD-10-CM

S56 is a non-billable header ICD-10-CM code for injury of muscle, fascia and tendon at forearm 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 S56

A: initial encounter
D: subsequent encounter
S: sequela

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

injury of muscle, fascia and tendon at or below wrist (S66.-)
sprain of joints and ligaments of elbow (S53.4-)

Code also

Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.

any associated open wound (S51.-)

Risk adjustment

S56 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.

Code to one of these instead S56

8 child codes. Green means billable.

Questions about S56

Is S56 a billable ICD-10-CM code?: No. S56 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does S56 sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the elbow and forearm (S50-S59).