Is S62.51 a billable ICD-10-CM code?

No. S62.51 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does S62.51 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).

What cannot be coded together with S62.51?

S62.51 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S62.51 (S62) and apply to it just the same.

S62.51

S62.51 — Fracture of proximal phalanx of thumb

Non-billable headerICD-10-CM

S62.51 is a non-billable header ICD-10-CM code for fracture of proximal phalanx of thumb. 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 S62

A: initial encounter for closed fracture
B: initial encounter for open fracture
D: subsequent encounter for fracture with routine healing
G: subsequent encounter for fracture with delayed healing
K: subsequent encounter for fracture with nonunion
P: subsequent encounter for fracture with malunion
S: sequela

Excludes1 inherited from the categories above S62.51

These are not written on S62.51, but they bind it: a note on a category applies to every code beneath it. Billing S62.51 with anything listed here is a denial.

Written on S62 — Fracture at wrist and hand level

traumatic amputation of wrist and hand (S68.-)

Excludes2 inherited from the categories above S62.51

Also inherited, and the opposite of Excludes1: these conditions are not part of S62.51, but a patient can have both, so you may code both.

Written on S62 — Fracture at wrist and hand level

fracture of distal parts of ulna and radius (S52.-)

Other codes that can never be billed with S62.51

These codes carry an Excludes1 note pointing at S62.51. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S62.51 alone.

M84.3Stress fracture
M84.4Pathological fracture, not elsewhere classified
S61Open wound of wrist, hand and fingers

Risk adjustment

S62.51 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 history

S62.51 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Code to one of these instead S62.51

6 child codes. Green means billable.

Related codes at this level

Codes that share S62.5. If S62.51 is not quite right, the correct code is usually one of these.

Questions about S62.51

Is S62.51 a billable ICD-10-CM code?: No. S62.51 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does S62.51 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).
What cannot be coded together with S62.51?: S62.51 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S62.51 (S62) and apply to it just the same.