O35.5 is the authoritative medical code for Maternal care for suspected damage to fetus by drugs. This classification is used in medical billing and clinical recording to specify the clinical criteria for maternal care for suspected damage to fetus by drugs (ICD-10-CM O35.5), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Maternal care for suspected damage to fetus by drugs is a non-billable ICD-10-CM category code O35.5. A more specific billable subcode must be selected for claims submission. Includes: the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy. Inclusion terms: Maternal care for damage to fetus from drug addiction. Excludes1 (not coded here): encounter for suspected maternal and fetal conditions ruled out Z03.7-. Code also: any associated maternal condition. 7th character: One of the following 7th characters is to be assigned to each code under category O35. 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 O35 that has a 7th character of 1 through 9..
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O35.5 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- the listed conditions in the fetus as a reason for hospitalization or other obstetric care to the mother, or for termination of pregnancy
Inclusion Terms
Alternative terms the tabular list files under this code.
- Maternal care for damage to fetus from drug addiction
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- encounter for suspected maternal and fetal conditions ruled out Z03.7-
Code Also
Additional codes that may be required to fully describe the encounter.
- any associated maternal condition
Frequently Asked Questions (FAQ) & Clinical Guidance
Can O35.5 be billed directly?
No. O35.5 (Maternal care for suspected damage to fetus by drugs) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does O35.5 require a 7th character?
Yes. One of the following 7th characters is to be assigned to each code under category O35. 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 O35 that has a 7th character of 1 through 9..
What can't be coded together with O35.5?
Per Excludes1 instructions, O35.5 must not be reported with: encounter for suspected maternal and fetal conditions ruled out (Z03.7-).
What conditions are included under O35.5?
Maternal care for suspected damage to fetus by drugs includes: Maternal care for damage to fetus from drug addiction.
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as O35.5, with their registry titles.
- O35 — Maternal care for known or suspected fetal abnormality and damage
- O35.0 — Maternal care for (suspected) central nervous system malformation in fetus
- O35.00 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified
- O35.000 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, not applicable or unspecified
- O35.001 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 1
- O35.002 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 2
- O35.003 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 3
- O35.004 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 4
- O35.005 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 5
- O35.009 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, other fetus
- O35.00X0 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, not applicable or unspecified
- O35.00X1 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 1
- O35.00X2 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 2
- O35.00X3 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 3
- O35.00X4 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 4
- O35.00X5 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 5
- O35.00X9 — Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, other fetus
- O35.01 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum
- O35.010 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, not applicable or unspecified
- O35.011 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 1
- O35.012 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 2
- O35.013 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 3
- O35.014 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 4
- O35.015 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 5
- O35.019 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, other fetus
- O35.01X0 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, not applicable or unspecified
- O35.01X1 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 1
- O35.01X2 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 2
- O35.01X3 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 3
- O35.01X4 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 4
- O35.01X5 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, fetus 5
- O35.01X9 — Maternal care for (suspected) central nervous system malformation or damage in fetus, agenesis of the corpus callosum, other fetus
- O35.02 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly
- O35.020 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly, not applicable or unspecified
- O35.021 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly, fetus 1
- O35.022 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly, fetus 2
- O35.023 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly, fetus 3
- O35.024 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly, fetus 4
- O35.025 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly, fetus 5
- O35.029 — Maternal care for (suspected) central nervous system malformation or damage in fetus, anencephaly, other fetus
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Pregnancy (single) (uterine), complicated by (care of) (management affected by), fetal (maternal care for), damage from, drug addiction
- Pregnancy (single) (uterine), complicated by (care of) (management affected by), fetal (maternal care for), damage from, maternal, drug addiction
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code O33.5
Maternal care for disproportion due to unusually large fetus