ICD10BillableValid for clinical use

ICD-10 Code Z33.1: Pregnant state, incidental

Z33.1 is a billable ICD-10 diagnosis code used to classify Pregnant state, incidental in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Factors influencing health status and contact with health services (Z00-Z99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Factors influencing health status and contact with health services (Z00-Z99).

When is it used?

  • May be used when a clinician documents pregnant state, incidental in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
21Factors influencing health status and contact with health services (Z00-Z99)
block
Z30-Z39Persons encountering health services in circumstances related to reproduction
category
Z33Pregnant state
currentZ33

Official coding notes

Inclusion terms
  • Pregnancy NOS
  • Pregnant state NOS
Excludes1 (do not code together)
  • complications of pregnancy (O00-O9A)
  • pregnant state, gestational carrier (Z33.3)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

General PhysicianObstetricianGynecologist

Coverage-related procedures and services

CPT 87801high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA), MULTIPLE ORGANISMS; AMPLIFIED PROBE(S) TECHNIQUE
Source: CMS coverage guidance
CPT 0527Uhigh
HERPES SIMPLEX VIRUS (HSV) TYPES 1 AND 2 AND VARICELLA ZOSTER VIRUS (VZV), AMPLIFIED PROBE TECHNIQUE, EACH PATHOGEN REPORTED AS DETECTED OR NOT DETECTED
Source: CMS coverage guidance
CPT 0402Uhigh
INFECTIOUS AGENT (SEXUALLY TRANSMITTED INFECTION), CHLAMYDIA TRACHOMATIS, NEISSERIA GONORRHOEAE, TRICHOMONAS VAGINALIS, MYCOPLASMA GENITALIUM, MULTIPLEX AMPLIFIED PROBE TECHNIQUE, VAGINAL, ENDOCERVICAL, OR MALE URINE, EACH PATHOGEN REPORTED AS DETECTED OR NOT DETECTED
Source: CMS coverage guidance
CPT 87800high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA), MULTIPLE ORGANISMS; DIRECT PROBE(S) TECHNIQUE
Source: CMS coverage guidance
CPT 87494high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA); CHLAMYDIA TRACHOMATIS AND NEISSERIA GONORRHOEAE, MULTIPLEX AMPLIFIED PROBE TECHNIQUE
Source: CMS coverage guidance
CPT 0455Uhigh
INFECTIOUS AGENTS (SEXUALLY TRANSMITTED INFECTION), CHLAMYDIA TRACHOMATIS, NEISSERIA GONORRHOEAE, AND TRICHOMONAS VAGINALIS, MULTIPLEX AMPLIFIED PROBE TECHNIQUE, VAGINAL, ENDOCERVICAL, GYNECOLOGICAL SPECIMENS, OROPHARYNGEAL SWABS, RECTAL SWABS, FEMALE OR MALE URINE, EACH PATHOGEN REPORTED AS DETECTED OR NOT DETECTED
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Pregnant state, incidental

Frequently asked questions

Code details

CodeZ33.1
SystemICD10
Display namePregnant state, incidental
ChapterFactors influencing health status and contact with health services (Z00-Z99)
BlockPersons encountering health services in circumstances related to reproduction

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Carrier(suspected)ofPregnancy(single) (uterine)Pregnancy(single) (uterine)State(of)Status(post)
See also
Delivery and Puerperal

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code Z33.1 for Pregnant state, incidental | HealthAssure