266.2 is a legacy non-billable code used to specify a medical diagnosis of other b-complex deficiencies. This code was replaced on September 30, 2015 by its ICD-10 equivalent. Cerebral degeneration due to vitamin B12 deficiency
As of October 2015, ICD-9 codes are no longer used for medical coding. Instead, use this equivalent ICD-10-CM code, which is an approximate match to ICD-9 code 266.2:
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
266.2 is a legacy non-billable code used to specify a medical diagnosis of other b-complex deficiencies. This code was replaced on September 30, 2015 by its ICD-10 equivalent.
General Equivalence Map Definitions The ICD-9 and ICD-10 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
ICD-9-CM 266.2 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 266.2 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Vitamin B12 deficiency glossitis. Clinical Information. Condition due to a deficiency of vitamin b12. State in which folate is absent or in diminished amount relative to the normal requirement of an organism or a biologic system.