Is H02.51 a billable ICD-10-CM code?

No. H02.51 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does H02.51 sit in the tabular list?

Diseases of the eye and adnexa (H00-H59), in the block Disorders of eyelid, lacrimal system and orbit (H00-H05).

What cannot be coded together with H02.51?

H02.51 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 H02.51 (H02) and apply to it just the same.

H02.51

H02.51 — Abnormal innervation syndrome

Non-billable headerICD-10-CM

H02.51 is a non-billable header ICD-10-CM code for abnormal innervation syndrome. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above H02.51

These are not written on H02.51, but they bind it: a note on a category applies to every code beneath it. Billing H02.51 with anything listed here is a denial.

Written on H02 — Other disorders of eyelid

congenital malformations of eyelid (Q10.0-Q10.3)

Excludes2 inherited from the categories above H02.51

Also inherited, and the opposite of Excludes1: these conditions are not part of H02.51, but a patient can have both, so you may code both.

Written on H02.5 — Other disorders affecting eyelid function

blepharospasm (G24.5)
organic tic (G25.69)
psychogenic tic (F95.-)

Risk adjustment

H02.51 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

H02.51 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 H02.51

7 child codes. Green means billable.

Related codes at this level

Codes that share H02.5. If H02.51 is not quite right, the correct code is usually one of these.

Questions about H02.51

Is H02.51 a billable ICD-10-CM code?: No. H02.51 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H02.51 sit in the tabular list?: Diseases of the eye and adnexa (H00-H59), in the block Disorders of eyelid, lacrimal system and orbit (H00-H05).
What cannot be coded together with H02.51?: H02.51 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 H02.51 (H02) and apply to it just the same.