G83.1 vs I69.04
G83.1 (Monoplegia of lower limb) compared with I69.04 (Monoplegia of lower limb following nontraumatic subarachnoid hemorrhage), 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. G83.1 carries an Excludes1 note covering I69.04: “monoplegia of lower limbs due to sequela of cerebrovascular disease (I69.04-, I69.14-, I69.24-, I69.34-, I69.84-, I69.94-)”
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
| G83.1Monoplegia of lower limb | I69.04Monoplegia of lower limb following nontraumatic subarachnoid hemorrhage | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | G00-G99 — Diseases of the Nervous System (G00-G99) | I00-I99 — Diseases of the Circulatory System (I00-I99) |
| Definition | Monoplegia of lower limb is a non-billable ICD-10-CM category code (G83.1). | Monoplegia of lower limb following nontraumatic subarachnoid hemorrhage is a non-billable ICD-10-CM category code (I69.04). |
| Includes | paralysis (complete) (incomplete), except as in G80-G82 Paralysis of lower limb | — |
| Use additional code | — | code to identify presence of: alcohol abuse and dependence (F10.-) exposure to environmental tobacco smoke (Z77.22) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources