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ICD-10-CM Code E51.2
Wernicke's encephalopathy

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

E51.2 is a billable ICD code used to specify a diagnosis of wernicke's encephalopathy. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code E512 is used to code Wernicke's encephalopathy

Wernicke's encephalopathy (or Wernicke's disease) refers to the presence of neurological symptoms caused by biochemical lesions of the central nervous system after exhaustion of B-vitamin reserves, in particular thiamine (vitamin B1). The condition is part of a larger group of diseases related to thiamine insufficiency, including beriberi in all its forms, and Korsakoff syndrome. When Wernicke's encephalopathy occurs simultaneously with Korsakoff syndrome it is known as Wernicke–Korsakoff syndrome.

Specialty: Endocrinology
MeSH Code: D014899
ICD 9 Code: 291.1


Source: Wikipedia

MS-DRG Mapping

  • DRG Group #640-641 - Misc disorders of nutrition, metabolism, fluids or electrolytes with MCC.
  • DRG Group #640-641 - Misc disorders of nutrition, metabolism, fluids or electrolytes without MCC.


Other and unspecified manifestations of thiamine deficiency (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code E51.2 and a single ICD9 code, 265.1 is an approximate match for comparison and conversion purposes.

Parent Code: E51 - Thiamine deficiency

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/E512