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