2027 ICD-10-CM Diagnosis Code O90.81Anemia of the puerperium
ICD-10-CM Codes›O00-O9A›O85-O92›O90
- Billable — Valid for Submission
- Not Chronic
O90.81 is a billable ICD-10-CM diagnosis code for anemia of the puerperium. 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 anemia during the puerperium. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complications specified during the puerperium.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O90.81.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Anemia during the puerperium
- Blood dyscrasia puerperal
- Postpartum iron deficiency anemia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O90.81: 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 anemia NOS
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- pre-existing anemia complicating the puerperium (O99.03)
- 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.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- 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.
- 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 O90.81, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming O90.81: they are not reported together with it, unless the two conditions are unrelated.
- O99.0 Anemia complicating pregnancy, childbirth and the puerperiumanemia arising in the puerperium (O90.81)
- O99.0 Anemia complicating pregnancy, childbirth and the puerperiumpostpartum anemia NOS (O90.81)
- O99.03 Anemia complicating the puerperiumpostpartum anemia not pre-existing prior to delivery (O90.81)
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.
Patient EducationClinical
Anemia
If you have anemia, your blood does not carry enough oxygen to the rest of your body. The most common cause of anemia is not having enough iron. Your body needs iron to make hemoglobin. Hemoglobin is an iron-rich protein that gives the red color to blood. It carries oxygen from the lungs to the rest of the body.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert O90.81 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About O90.81Overview
What is the ICD-10 code for anemia of the puerperium?
The ICD-10-CM code for anemia of the puerperium is O90.81 (sometimes written as O9081). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is O90.81 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report anemia of the puerperium on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does O90.81 group to?
When anemia of the puerperium 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 O90.81 be reported for?
The Medicare Code Editor checks anemia of the puerperium against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.
Can O90.81 be reported with O99.03?
Not as a rule. The Excludes1 note on O90.81 lists "pre-existing anemia complicating the puerperium (O99.03)". 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).
