Is B78.9 a billable ICD-10-CM code?

Yes. B78.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does B78.9 sit in the tabular list?

Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).

What cannot be coded together with B78.9?

B78.9 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 B78.9 (B78) and apply to it just the same.

B78.9

B78.9 — Strongyloidiasis, unspecified

Billable / specific codeICD-10-CM

B78.9 is a billable, specific ICD-10-CM code for strongyloidiasis, unspecified. It is valid for submission on a claim.

Excludes1 inherited from the categories above B78.9

These are not written on B78.9, but they bind it: a note on a category applies to every code beneath it. Billing B78.9 with anything listed here is a denial.

Written on B78 — Strongyloidiasis

trichostrongyliasis (B81.2)

Risk adjustment

B78.9 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

B78.9 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.

A56632Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy

How B78.9 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 B78.9.

Strongyloidiasis, strongyloidosis
Disorder›glomerular›strongyloidiasis
Glomerulonephritis›in›strongyloidiasis

Code history

B78.9 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 B78. If B78.9 is not quite right, the correct code is usually one of these.

Questions about B78.9

Is B78.9 a billable ICD-10-CM code?: Yes. B78.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does B78.9 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).
What cannot be coded together with B78.9?: B78.9 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 B78.9 (B78) and apply to it just the same.