Is Z33.1 a billable ICD-10-CM code?

Yes. Z33.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does Z33.1 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services in circumstances related to reproduction (Z30-Z39).

What cannot be coded together with Z33.1?

Z33.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Z33.1

Z33.1 — Pregnant state, incidental

Billable / specific codeICD-10-CM

Z33.1 is a billable, specific ICD-10-CM code for pregnant state, incidental. 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.

complications of pregnancy (O00-O9A)
pregnant state, gestational carrier (Z33.3)

Inclusion terms

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

Pregnancy NOS
Pregnant state NOS

Risk adjustment

Z33.1 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

Z33.1 is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A55326Billing and Coding: Zika Virus Testing by PCR and ELISA Methods
A57554Billing and Coding: Immune Globulins
A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

How Z33.1 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 Z33.1.

Pregnancy(single) (uterine)
Carrier of›gestational, pregnant
Pregnancy›incidental finding
Status›pregnancy, incidental
State›pregnant›incidental

Related codes at this level

Codes that share Z33. If Z33.1 is not quite right, the correct code is usually one of these.

Questions about Z33.1

Is Z33.1 a billable ICD-10-CM code?: Yes. Z33.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z33.1 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services in circumstances related to reproduction (Z30-Z39).
What cannot be coded together with Z33.1?: Z33.1 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.