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ICD-10-CM 2027 diagnosis code

O41Other disorders of amniotic fluid and membranes

Not billable — use a more specific code

O41 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About O41

O41 is the ICD-10-CM diagnosis code for other disorders of amniotic fluid and membranes. It belongs to block O30-O48 (maternal care related to the fetus and amniotic cavity and possible delivery problems) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: O41.0 (oligohydramnios), O41.1 (membranes), O41.8 (membranes) and O41.9 (unspecified).

Don't report O41 together with the conditions in its Excludes1 note: encounter for suspected maternal and fetal conditions ruled out (Z03.7-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under O41

Coding notes

Excludes1Not coded here — never report together with this code
  • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

Notes that apply from higher levels

Instructions written at a parent level also apply to O41.

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

Codes whose notes reference O41

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)
  • No changes since FY2016.

Common questions about O41

Is O41 billable?

No. O41 is a header code. Report one of its more specific subcodes instead.