G45.4 vs R41.3
G45.4 (Transient global amnesia) compared with R41.3 (Other amnesia), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. G45.4 carries an Excludes1 note covering R41.3: “amnesia NOS (R41.3)”
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. R41.3 carries an Excludes1 note covering G45.4: “transient global amnesia (G45.4)”
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
| G45.4Transient global amnesia | R41.3Other amnesia | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Transient global amnesia is a billable ICD-10-CM diagnosis code (G45.4). | Other amnesia is a billable ICD-10-CM diagnosis code (R41.3). |
| Includes | — | Amnesia NOS Memory loss NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources