ICD-10-CM 2027
ICD-10 code for Simultanagnosia
From the official ICD-10-CM alphabetic index entry “Simultanagnosia (asimultagnosia)”. Page updated September 29, 2026.
About coding Simultanagnosia
The ICD-10-CM code for Simultanagnosia is R48.3 (Visual agnosia).
Within R48 (dyslexia and other symbolic dysfunctions, not elsewhere classified), R48.3 is specifically for visual agnosia. Related codes cover dyslexia and alexia (R48.0), agnosia (R48.1), apraxia (R48.2), other symbolic dysfunctions (R48.8) and unspecified symbolic dysfunctions (R48.9).
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 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), 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 Simultanagnosia ICD-10 codes
What is the ICD-10 code for Simultanagnosia?
- R48.3 — Visual agnosia.
Is R48.3 billable?
- Yes. R48.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R48.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R48.3 as a principal diagnosis.
Is R48.3 a CC or MCC?
- No. R48.3 is neither a CC nor an MCC under MS-DRG v44.0.