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ICD-10-CM 2027 diagnosis code

O35.1XX1Maternal care for (suspected) chromosomal abnormality in fetus, fetus 1

Deleted in FY2023Requires 7th character

O35.1XX1 was removed from ICD-10-CM in FY2023 and can't be reported for dates of service on or after October 1, 2022.Short description: Maternal care for chromosomal abnormality in fetus, fetus 1

Code last changed in FY2016 (effective October 1, 2015). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About O35.1XX1

O35.1XX1 was the ICD-10-CM code for maternal care for (suspected) chromosomal abnormality in fetus, fetus 1 until it was deleted in FY2023. It can't be reported for dates of service on or after October 1, 2022.

7th character

1fetus 1

Other encounter types for O35.1:

Notes that apply from higher levels

Instructions written at a parent level also apply to O35.1XX1.

› From O35 Maternal care for known or suspected fetal abnormality and damage
Includes
  • the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy
Excludes1
  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)
Code also
  • any associated maternal condition

Broader instructions also apply from Chapter 15: Pregnancy, childbirth and the puerperium.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2023 (effective 10/1/2022): Deleted

Common questions about O35.1XX1

Is O35.1XX1 billable?

No. O35.1XX1 was deleted in FY2023.