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Z36.1

Z36.1Encounter for antenatal screening for raised alphafetoprotein level

Billable / specific codeICD-10-CMPOA exempt

Z36.1 is a billable, specific ICD-10-CM code for encounter for antenatal screening for raised alphafetoprotein level. It is valid for submission on a claim.

Inclusion terms

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

  • Encounter for antenatal screening for elevated maternal serum alphafetoprotein level

Risk adjustment

Z36.1 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.

How Z36.1 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 Z36.1.

  • Encounterantenatal screeningelevated maternal serum alphafetoprotein level
  • Encounterantenatal screeningraised alphafetoprotein level

Related codes at this level

Codes that share Z36. If Z36.1 is not quite right, the correct code is usually one of these.

Questions about Z36.1

Is Z36.1 a billable ICD-10-CM code?
Yes. Z36.1 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does Z36.1 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).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.