ICD-9 33905 Code Mapping

Terms & Definitions

Alternative: Single ICD-10 code reproduces the complete meaning of one ICD-9 code. Cluster: Multiple ICD-10 codes representing single ICD-9 code. At times it requires multiple ICD-10 codes combined to reproduce the complete meaning of one ICD-9 code. Mapping Types: "Single Code-to-Single Code", "Single Code-to-Cluster", "Cluster-to-Single Code". Note: More than one ICD-10 code (cluster) may be a valid translation of a given ICD-9 code. Which one of those ICD-10 codes (clusters) is the most correct translation must be determined based on the clinical case.

ICD-9 33905 to ICD-10 Mapping Options

Recommended Mapping (based on statistical analysis)
Source ICD-9	Mapping Type	Target ICD-10
33905 (Diagnosis) - Shrt lst uni nral hdache (Short lasting unilateral neuralgiform headache with conjunctival injection and tearing)	Single To Single	G44059 (Diagnosis) - Shrt lst unil nerlgif hdache w cnjnct inject/tear, not ntrct (Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable)
CMS/CDC General Equivalence Mappings
33905 (Diagnosis) - Shrt lst uni nral hdache (Short lasting unilateral neuralgiform headache with conjunctival injection and tearing)	Single To Single	Alternative #1: G44059 (Diagnosis) - Shrt lst unil nerlgif hdache w cnjnct inject/tear, not ntrct (Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable)
	Single To Single	Alternative #2: G44051 (Diagnosis) - Shrt lst unil nerlgif hdache w cnjnct inject/tear, ntrct (Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable)