Z36.1 – Encounter for antenatal screening for raised alphafetoprotein level

ICD-10-CM 2027 diagnosis code · Persons encountering health services in circumstances related to reproduction

Billable code

ICD-10-CM code Z36.1

Code: Z36.1 (claims format: Z361)
Description: Encounter for antenatal screening for raised alphafetoprotein level
Short description: Enctr for antenat screen for raised alphafetoprotein level
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Z30-Z39 Persons encountering health services in circumstances related to reproduction
Parent codes: Z36

Notes for Z36.1

Applicable to:

Encounter for antenatal screening for elevated maternal serum alphafetoprotein level

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Z36 – Encounter for antenatal screening of mother

Includes:

Encounter for placental sample (taken vaginally)
Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.

Excludes1 (not coded here):

diagnostic examination- code to sign or symptom
encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
suspected fetal condition affecting management of pregnancy - code to condition in Chapter 15

Excludes2 (not included here):

abnormal findings on antenatal screening of mother (O28.-)
genetic counseling and testing (Z31.43-, Z31.5)
routine prenatal care (Z34)

Index terms for Z36.1

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in Z36

Frequently asked questions

What is ICD-10 code Z36.1?

Z36.1 is the ICD-10-CM code for encounter for antenatal screening for raised alphafetoprotein level, in the block Z30-Z39 (Persons encountering health services in circumstances related to reproduction).

Is Z36.1 a billable code?

Yes. Z36.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Z36.1 belong to?

It belongs to category Z36 – Encounter for antenatal screening of mother.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.