2027 ICD-10-CM Diagnosis Code O36.8224Fetal anemia and thrombocytopenia, second trimester, fetus 4
O36.8224 is a billable ICD-10-CM diagnosis code for fetal anemia and thrombocytopenia, second trimester, fetus 4. The 7th character 4 identifies fetus 4 in a multiple gestation pregnancy. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 817 through 819, 831 through 833. The code is restricted by the Medicare Code Editor to maternity cases (age 9 through 64). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Maternal care related to fetal conditions.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for O36.8224.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to O36.8224: its own notes plus those printed at O36 and Chapter 15. A note printed at a category, block or chapter applies to every code under it.
Includes
Further defines, or gives examples of, the content of the category.
- the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- 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.
- labor and delivery complicated by fetal stress (O77.-)
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
7th Character
Every code in the category takes a 7th character from the listed values, with the placeholder X filling any empty positions before it.
- One of the following 7th characters is to be assigned to each code under category O36. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O36 that has a 7th character of 1 through 9.
- 0not applicable or unspecified
- 1fetus 1
- 2fetus 2
- 3fetus 3
- 4fetus 4 this code
- 5fetus 5
- 9other fetus
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name O36.8224, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming O36.8224: they are not reported together with it, unless the two conditions are unrelated.
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 O36.8224 to ICD-9-CMHistory
Code HistoryHistory
Questions About O36.8224Overview
What is the ICD-10 code for fetal anemia and thrombocytopenia, second trimester, fetus 4?
The ICD-10-CM code for fetal anemia and thrombocytopenia, second trimester, fetus 4 is O36.8224 (sometimes written as O368224). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is O36.8224 (Fetal anemia and thrombocytopenia, second trimester) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report fetal anemia and thrombocytopenia, second trimester, fetus 4 on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What does the 7th character 4 in O36.8224 mean?
The final character 4 identifies the fetus in a multiple gestation pregnancy: this code reports fetal anemia and thrombocytopenia, second trimester for fetus 4.
What MS-DRG does O36.8224 group to?
When fetal anemia and thrombocytopenia, second trimester, fetus 4 is the principal diagnosis on an inpatient stay, it groups to MS-DRG 833, 832, 831, 819, 818, 817, with relative weights from 0.5000 to 1.7586 depending on complications. Higher weights mean higher Medicare reimbursement.
Who can O36.8224 be reported for?
The Medicare Code Editor checks fetal anemia and thrombocytopenia, second trimester, fetus 4 against patient demographics: this code is intended for maternity cases (age 9 through 64). Claims outside these limits are flagged as inconsistent.
