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ICD-10-CM 2027 diagnosis code

O90Complications of the puerperium, not elsewhere classified

Not billable — use a more specific code

O90 is a header code, so it can't be reported by itself. Choose one of the 9 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 O90

O90 is the ICD-10-CM diagnosis code for complications of the puerperium, not elsewhere classified. It belongs to block O85-O92 (complications predominantly related to the puerperium) and chapter 15 (pregnancy, childbirth and the puerperium). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: O90.0 (wound), O90.1 (wound), O90.2 (wound), O90.3 (cardiomyopathy), O90.4 (failure), O90.5 (thyroiditis), O90.6 (disturbance), O90.8 (classified) and 1 more.

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 O90

Notes that apply from higher levels

Instructions written at a parent level also apply to O90.

Broader instructions also apply from O85-O92 Complications predominantly related to the puerperium and 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)
  • No changes since FY2016.

Common questions about O90

Is O90 billable?

No. O90 is a header code. Report one of its more specific subcodes instead.