ICD-10 C218 Code Mapping

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.

ICD-10 C218 (Diagnosis) to ICD-9 Mapping Options

Source ICD-10	Mapping Type	Target ICD-9
Recommended Mapping (based on statistical analysis)
C218 (Diagnosis) - Malig neoplasm of ovrlp sites of rectum, anus and anal canal (Malignant neoplasm of overlapping sites of rectum, anus and anal canal)	Single To Single	1548 (Diagnosis) - Mal neo rectum/anus NEC (Malignant neoplasm of other sites of rectum, rectosigmoid junction, and anus)
CMS/CDC General Equivalence Mappings
C218 (Diagnosis) - Malig neoplasm of ovrlp sites of rectum, anus and anal canal (Malignant neoplasm of overlapping sites of rectum, anus and anal canal)	Single To Single	Alternative #1: 1548 (Diagnosis) - Mal neo rectum/anus NEC (Malignant neoplasm of other sites of rectum, rectosigmoid junction, and anus)