Is Q84.3 a billable ICD-10-CM code?

Yes. Q84.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Q84.3 sit in the tabular list?

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Other congenital malformations (Q80-Q89).

What cannot be coded together with Q84.3?

Q84.3 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Q84.3

Q84.3 — Anonychia

Billable / specific codeICD-10-CMPOA exempt

Q84.3 is a billable, specific ICD-10-CM code for anonychia. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

nail patella syndrome (Q87.2)

Risk adjustment

Q84.3 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.

Medicare coverage

Q84.3 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A52998Billing and Coding: Surgical Treatment of Nails
A57666Billing and Coding: Surgical Treatment of Nails
A59028Billing and Coding: Surgical Treatment of Nails

How Q84.3 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 Q84.3.

Anonychia(congenital)
Agenesis›nail(s)

Related codes at this level

Codes that share Q84. If Q84.3 is not quite right, the correct code is usually one of these.

Questions about Q84.3

Is Q84.3 a billable ICD-10-CM code?: Yes. Q84.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Q84.3 sit in the tabular list?: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0), in the block Other congenital malformations (Q80-Q89).
What cannot be coded together with Q84.3?: Q84.3 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.