ICD-10-CM 2027
ICD-10 code for Anterograde amnesia
From the official ICD-10-CM alphabetic index entry “Amnesia › anterograde”. Page updated September 29, 2026.
About coding Anterograde amnesia
The ICD-10-CM code for Anterograde amnesia is R41.1 (Anterograde amnesia).
Within R41 (other symptoms and signs involving cognitive functions and awareness), R41.1 is specifically for Anterograde amnesia. Related codes cover Disorientation, unspecified (R41.0), retrograde amnesia (R41.2), other amnesia (R41.3), neurologic neglect syndrome (R41.4), other symptoms and signs involving cognitive functions and awareness (R41.8) and unspecified symptoms and signs involving cognitive functions and awareness (R41.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 947 (Signs and Symptoms with MCC, relative weight 1.261) and DRG 948 (Signs and Symptoms without MCC, relative weight 0.7835), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Anterograde amnesia ICD-10 codes
What is the ICD-10 code for Anterograde amnesia?
- R41.1 — Anterograde amnesia.
Is R41.1 billable?
- Yes. R41.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R41.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R41.1 as a principal diagnosis.
Is R41.1 a CC or MCC?
- No. R41.1 is neither a CC nor an MCC under MS-DRG v44.0.