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O35.6

⚠ Non-billable (Header)

Maternal care for (suspected) damage to fetus by radiation

Pregnancy, childbirth and the puerperium (O00-O9A)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

O35
  • • encounter for suspected maternal and fetal conditions ruled out (Z03.7-)

Child Codes (7)

O35.6XX0Maternal care for (suspected) damage to fetus by radiation, not applicable or unspecifiedO35.6XX1Maternal care for (suspected) damage to fetus by radiation, fetus 1O35.6XX2Maternal care for (suspected) damage to fetus by radiation, fetus 2O35.6XX3Maternal care for (suspected) damage to fetus by radiation, fetus 3O35.6XX4Maternal care for (suspected) damage to fetus by radiation, fetus 4O35.6XX5Maternal care for (suspected) damage to fetus by radiation, fetus 5O35.6XX9Maternal care for (suspected) damage to fetus by radiation, other fetus

Clinical Description

ICD-10-CM code O35.6 represents maternal care for (suspected) damage to fetus by radiation. This code falls under the Pregnancy, childbirth and the puerperium (O00-O9A) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 5-character code at the 4th level of specificity. There are 7 more specific child codes under O35.6. Coders should note that O35.6 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code O35.6?

ICD-10-CM code O35.6 is "Maternal care for (suspected) damage to fetus by radiation". It belongs to the category: Pregnancy, childbirth and the puerperium (O00-O9A).

Is O35.6 a billable ICD-10 code?

No, O35.6 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with O35.6?

O35.6 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in O35

Other codes in the same category that may be relevant for differential coding:

O35.0Maternal care for (suspected) central nervous system malformation in fetusO35.1Maternal care for (suspected) chromosomal abnormality in fetusO35.2Maternal care for (suspected) hereditary disease in fetusO35.3Maternal care for (suspected) damage to fetus from viral disease in motherO35.4Maternal care for (suspected) damage to fetus from alcoholO35.5Maternal care for (suspected) damage to fetus by drugsO35.7Maternal care for (suspected) damage to fetus by other medical proceduresO35.8Maternal care for other (suspected) fetal abnormality and damageO35.9Maternal care for (suspected) fetal abnormality and damage, unspecifiedO35.AMaternal care for other (suspected) fetal abnormality and damage, fetal facial anomaliesO35.BMaternal care for other (suspected) fetal abnormality and damage, fetal cardiac anomaliesO35.CMaternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies

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Code Information

CodeO35.6
BillableNo — Header code
ParentO35
CategoryPregnancy, childbirth and the puerperium (O00-O9A)
Excludes11 rule(s)
Excludes20 note(s)
Child codes7

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)