2027 ICD-10-CM Diagnosis Code O90.6Postpartum mood disturbance

ICD-10-CM Codes›O00-O9A›O85-O92›O90

ICD-10-CM O90.6
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

O90.6 is a billable ICD-10-CM diagnosis code for postpartum mood disturbance. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 769, 776. The code is restricted by the Medicare Code Editor to maternity cases (age 9 through 64). Coders also document this condition as maternity blues. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications specified during the puerperium and Depressive disorders.

Code Identity

ICD-10-CM Code
O90.6
Billable Status
Yes — Valid for Submission
Code Describes
Postpartum mood disturbance
Short Description
Postpartum mood disturbance
Same as the full description in the CMS dataset.
Parent Code
O90
Complications of the puerperium, not elsewhere classified

Code Classification

ChapterO00-O9APregnancy, childbirth and the puerperium
SectionO85-O92Complications predominantly related to the puerperium
CategoryO90Complications of the puerperium, not elsewhere classified
This CodeO90.6Postpartum mood disturbance

Code EditsBilling

Medicare Code Editor checks that affect claim validity for O90.6.

Maternity diagnoses
The Medicare Code Editor detects inconsistencies in maternity cases by checking a patient's age and any diagnosis on the patient's record. The maternity code edits apply to patients age ange is 9–64 years inclusive (e.g., diabetes in pregnancy, antepartum pulmonary complication).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Maternity blues
  • Postpartum depression
  • Postpartum mood disorder
  • Transitory postpartum mood disturbance

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to O90.6: its own notes plus those printed at block O85-O92 and Chapter 15. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Postpartum blues
  • Postpartum dysphoria
  • Postpartum sadness

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On O90.6 itself
  • postpartum depression (F53.0)
  • puerperal psychosis (F53.1)
From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • supervision of normal pregnancy (Z34.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Block O85-O92 Complications predominantly related to the puerperium applies to 114 codes
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • puerperal osteomalacia (M83.0)
From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Notes

General instructions on how these codes are used.

From Chapter 15 (O00-O9A) Pregnancy, childbirth and the puerperium applies to 2,481 codes
  • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
  • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • 1st trimester- less than 14 weeks 0 days
  • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • 3rd trimester- 28 weeks 0 days until delivery

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name O90.6, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming O90.6: they are not reported together with it, unless the two conditions are unrelated.

  • F53 Mental and behavioral disorders associated with the puerperium, not elsewhere classified
    postpartum dysphoria (O90.6)

Excludes2 1

These codes carry an Excludes2 note naming O90.6: its condition is not part of those codes, and both may be reported when the patient has both.

  • O99.34 Other mental disorders complicating pregnancy, childbirth, and the puerperium
    postpartum mood disturbance (O90.6)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR PRG027
Complications specified during the puerperium
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR MBD002
Depressive disorders
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Mental Disorders

Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..

The full article covers:

  • What are mental disorders?
  • What are some types of mental disorders?
  • What causes mental disorders?
  • Who is at risk for mental disorders?
  • How are mental disorders diagnosed?
  • What are the treatments for mental disorders?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert O90.6 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
648.42 Mental dis-deliv w p/p
Approximate The match is approximate rather than exact.
ICD-9-CM
648.44 Mental disorder-postpart
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About O90.6Overview

What is the ICD-10 code for postpartum mood disturbance?

The ICD-10-CM code for postpartum mood disturbance is O90.6 (sometimes written as O906). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is O90.6 (Complications of the puerperium, not elsewhere classified) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report postpartum mood disturbance on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does O90.6 group to?

When postpartum mood disturbance is the principal diagnosis on an inpatient stay, it groups to MS-DRG 769, 776, with relative weights from 0.6718 to 1.6666 depending on complications. Higher weights mean higher Medicare reimbursement.

Who can O90.6 be reported for?

The Medicare Code Editor checks postpartum mood disturbance against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.

Can O90.6 be reported with F53.0?

Not as a rule. The Excludes1 note on O90.6 lists "postpartum depression (F53.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).