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G40.411 vs R56.1

G40.411 (Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus) compared with R56.1 (Post traumatic seizures), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.

Relationship

Conflict

Excludes1 conflict

G40.411
Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticus
↔
R56.1
Post traumatic seizures

Not coded here — these two are mutually exclusive.

“post traumatic seizures (R56.1)”

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. G40.411 carries an Excludes1 note covering R56.1: “post traumatic seizures (R56.1)”

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

G40.411Other generalized epilepsy and epileptic syndromes, intractable, with status epilepticusR56.1Post traumatic seizures
Billing statusBillableBillable
ClassificationG00-G99 — Diseases of the Nervous System (G00-G99)R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99)
DefinitionOther generalized epilepsy and epileptic syndromes, intractable, with status epilepticus is a billable ICD-10-CM diagnosis code (G40.411).Post traumatic seizures is a billable ICD-10-CM diagnosis code (R56.1).
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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