Is B34.3 a billable ICD-10-CM code?

Yes. B34.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does B34.3 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Other viral diseases (B25-B34).

What cannot be coded together with B34.3?

B34.3 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 B34.3 (B34) and apply to it just the same.

B34.3

B34.3 — Parvovirus infection, unspecified

Billable / specific codeICD-10-CM

B34.3 is a billable, specific ICD-10-CM code for parvovirus infection, unspecified. It is valid for submission on a claim.

Excludes1 inherited from the categories above B34.3

These are not written on B34.3, but they bind it: a note on a category applies to every code beneath it. Billing B34.3 with anything listed here is a denial.

Written on B34 — Viral infection of unspecified site

anogenital human papillomavirus infection (A63.0)
cytomegaloviral disease NOS (B25.9)
herpesvirus [herpes simplex] infection NOS (B00.9)
retrovirus infection NOS (B33.3)
viral agents as the cause of diseases classified elsewhere (B97.-)
viral warts due to human papillomavirus infection (B07)

Risk adjustment

B34.3 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

B34.3 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A59105Billing and Coding: Off-Label Use of Intravenous Immune Globulin (IVIG)

How B34.3 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 B34.3.

Infection, infected, infective›parvovirus NEC

Code history

B34.3 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share B34. If B34.3 is not quite right, the correct code is usually one of these.

Questions about B34.3

Is B34.3 a billable ICD-10-CM code?: Yes. B34.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does B34.3 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Other viral diseases (B25-B34).
What cannot be coded together with B34.3?: B34.3 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 B34.3 (B34) and apply to it just the same.