2023

  1. ICD-10-CM Codes
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  2. Z00-Z99
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  3. Z30-Z3A
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  4. Z33-
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  5. 2023 ICD-10-CM Diagnosis Code Z33.1

2023 ICD-10-CM Diagnosis Code Z33.1

Pregnant state, incidental

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
  • Z33.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM Z33.1 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of Z33.1 - other international versions of ICD-10 Z33.1 may differ.
ICD-10-CM Coding Rules
  • Z33.1 is applicable to maternity patients aged 12 - 55 years inclusive.
  • Z33.1 is applicable to female patients.
Applicable To
  • Pregnancy NOS
  • Pregnant state NOS
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Z33.1. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • complications of pregnancy (O00-O9A
    ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    • O00-O08 Pregnancy with abortive outcome
    • O09-O09 Supervision of high risk pregnancy
    • O10-O16 Edema, proteinuria and hypertensive diso...
    • O20-O29 Other maternal disorders predominantly r...
    • O30-O48 Maternal care related to the fetus and a...
    • O60-O77 Complications of labor and delivery
    • O80-O82 Encounter for delivery
    • O85-O92 Complications predominantly related to t...
    • O94-O9A Other obstetric conditions, not elsewher...
    )
  • pregnant state, gestational carrier (
    ICD-10-CM Diagnosis Code Z33.3

    Pregnant state, gestational carrier

      2017 - New Code 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx POA Exempt
    Type 1 Excludes
    • encounter for procreative management and counseling for gestational carrier (Z31.7)
    Z33.3
    )
The following code(s) above Z33.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Z33.1:
  • Z00-Z99
    2023 ICD-10-CM Range Z00-Z99

    Factors influencing health status and contact with health services

    Note
    • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
    • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
    • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
    Factors influencing health status and contact with health services
Approximate Synonyms
  • Patient currently pregnant
  • Patient pregnant during encounter for other complaint
ICD-10-CM Z33.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 951 Other factors influencing health status

Convert Z33.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to Z33.1:
  • Carrier (suspected)
    • gestational, pregnant Z33.1
  • Pregnancy (single) (uterine) Z33.1 - see also Delivery and Puerperal
    • incidental finding Z33.1
  • State (of)
  • Status (post) - see also Presence (of)
    • pregnancy, incidental Z33.1

ICD-10-CM Codes Adjacent To Z33.1
Z31.89 Encounter for other procreative management
Z31.9 Encounter for procreative management, unspecified
Z32 Encounter for pregnancy test and childbirth and childcare instruction
Z32.0 Encounter for pregnancy test
Z32.00 …… result unknown
Z32.01 …… result positive
Z32.02 …… result negative
Z32.2 Encounter for childbirth instruction
Z32.3 Encounter for childcare instruction
Z33 Pregnant state
Z33.1 Pregnant state, incidental
Z33.2 Encounter for elective termination of pregnancy
Z33.3 Pregnant state, gestational carrier
Z34 Encounter for supervision of normal pregnancy
Z34.0 Encounter for supervision of normal first pregnancy
Z34.00 …… unspecified trimester
Z34.01 …… first trimester
Z34.02 …… second trimester
Z34.03 …… third trimester
Z34.8 Encounter for supervision of other normal pregnancy
Z34.80 …… unspecified trimester

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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