World Health Organization · 2026-01 · English
9B01 Disorders of the efferent pupillary system
Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.
More specific codes
9B01.0Physiologic anisocoria9B01.1Parasympathoparetic pupils9B01.2Pharmacologic inhibition of the parasympathetic pathway9B01.3Iris sphincter disorders9B01.4Pharmacologic parasympathicotonic pupils9B01.5Pharmacologic sympathoparetic pupils9B01.6Sympathotonic pupils9B01.7Episodic unilateral mydriasis9B01.YOther specified disorders of the efferent pupillary system9B01.ZDisorders of the efferent pupillary system, unspecified© World Health Organization · CC BY-ND 3.0 IGO