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E13.37X2 vs O24.4

E13.37X2 (Other specified diabetes mellitus with diabetic macular edema, resolved following treatment, left eye) compared with O24.4 (Gestational diabetes mellitus), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Relationship

Conflict

Excludes1 conflict

E13.37X2
Other specified diabetes mellitus with diabetic macular edema, resolved following treatment, left eye
↔
O24.4
Gestational diabetes mellitus

Not coded here — these two are mutually exclusive.

“gestational diabetes (O24.4-)”

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. E13.37X2 carries an Excludes1 note covering O24.4: “gestational diabetes (O24.4-)”

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

E13.37X2Other specified diabetes mellitus with diabetic macular edema, resolved following treatment, left eyeO24.4Gestational diabetes mellitus
Billing statusBillableNon-billable header
ClassificationE00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89)O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A)
DefinitionOther specified diabetes mellitus with diabetic macular edema, resolved following treatment, left eye is a billable ICD-10-CM diagnosis code (E13.372).Gestational diabetes mellitus is a non-billable ICD-10-CM category code (O24.4).
7th characterOne of the following 7th characters is to be assigned to code E13.37 to designate laterality of the disease:—
Includes
diabetes mellitus due to genetic defects of beta-cell function
diabetes mellitus due to genetic defects in insulin action
postpancreatectomy diabetes mellitus
postprocedural diabetes mellitus
Diabetes mellitus arising in pregnancy
Gestational diabetes mellitus NOS
Use additional code
code to identify control using:
injectable non-insulin antidiabetic drugs (Z79.85)
insulin (Z79.4)
—
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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