I63.313 vs Z86.73
I63.313 (Cerebral infarction due to thrombosis of bilateral middle cerebral arteries) compared with Z86.73 (Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. I63.313 carries an Excludes2 note covering Z86.73: “chronic, without residual deficits (sequelae) (Z86.73)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| I63.313Cerebral infarction due to thrombosis of bilateral middle cerebral arteries | Z86.73Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | I00-I99 — Diseases of the Circulatory System (I00-I99) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Cerebral infarction due to thrombosis of bilateral middle cerebral arteries is a billable ICD-10-CM diagnosis code (I63.313). | Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits is a billable ICD-10-CM diagnosis code (Z86.73). |
| Includes | occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction | Personal history of prolonged reversible ischemic neurological deficit (PRIND) Personal history of stroke NOS without residual deficits |
| Use additional code | code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82) code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-) code to identify presence of: | — |
| Code first | — | any follow-up examination after treatment (Z09) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources