Is B83.9 a billable ICD-10-CM code?

Yes. B83.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does B83.9 sit in the tabular list?

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

What cannot be coded together with B83.9?

B83.9 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

B83.9

B83.9 — Helminthiasis, unspecified

Billable / specific codeICD-10-CM

B83.9 is a billable, specific ICD-10-CM code for helminthiasis, unspecified. 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.

intestinal helminthiasis NOS (B82.0)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Worms NOS

Risk adjustment

B83.9 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

B83.9 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy
A56632Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy

How B83.9 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 B83.9.

Colic›worm NOS
Fever›worm
Infection, infected, infective›helminths
Infection, infected, infective›worms
Infestation›helminth
Infestation›worms
Arthritis, arthritic›due to or associated with›helminthiasis
Arthritis, arthritic›in›helminthiasis NEC
Granuloma›peritoneum›due to ova of helminths NOS
Infestation›nematode NEC›conjunctiva NEC

Related codes at this level

Codes that share B83. If B83.9 is not quite right, the correct code is usually one of these.

Questions about B83.9

Is B83.9 a billable ICD-10-CM code?: Yes. B83.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does B83.9 sit in the tabular list?: Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).
What cannot be coded together with B83.9?: B83.9 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.