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O36.62X0 vs Z03.7

O36.62X0 (Maternal care for excessive fetal growth, second trimester, not applicable or unspecified) compared with Z03.7 (Encounter for suspected maternal and fetal conditions ruled out), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Relationship

Conflict

Excludes1 conflict

O36.62X0
Maternal care for excessive fetal growth, second trimester, not applicable or unspecified
↔
Z03.7
Encounter for suspected maternal and fetal conditions ruled out

Not coded here — these two are mutually exclusive.

“encounter for suspected maternal and fetal conditions ruled out (Z03.7-)”

An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.

Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Conflict

Excludes1 conflict

Z03.7
Encounter for suspected maternal and fetal conditions ruled out
↔
O36.62X0
Maternal care for excessive fetal growth, second trimester, not applicable or unspecified

Not coded here — these two are mutually exclusive.

“known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)”

An Excludes1 note means the two conditions cannot occur together, so the pair should not be reported for the same encounter. The sole exception is when the conditions are documented as unrelated to each other.

Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a

Can these codes be reported together?

No — do not report together. O36.62X0 carries an Excludes1 note covering Z03.7: “encounter for suspected maternal and fetal conditions ruled out (Z03.7-)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

No — do not report together. Z03.7 carries an Excludes1 note covering O36.62X0: “known or suspected fetal anomalies affecting management of mother, not ruled out (O26.-, O35.-, O36.-, O40.-, O41.-)”

Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

Side by side

O36.62X0Maternal care for excessive fetal growth, second trimester, not applicable or unspecifiedZ03.7Encounter for suspected maternal and fetal conditions ruled out
Billing statusBillableNon-billable header
ClassificationO00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A)Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99)
DefinitionMaternal care for excessive fetal growth, second trimester, not applicable or unspecified is a billable ICD-10-CM diagnosis code (O36.620).Encounter for suspected maternal and fetal conditions ruled out is a non-billable ICD-10-CM category code (Z03.7).
7th characterOne 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.—
Includes
the listed conditions in the fetus as a reason for hospitalization or other obstetric care of the mother, or for termination of pregnancy
Encounter for suspected maternal and fetal conditions not found
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources