Convert ICD-10 Code O22.53 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
O22.53 Cerebral venous thrombosis in pregnancy, third trimester		671.51 Thrombosis NEC-delivered
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
O22.53 Cerebral venous thrombosis in pregnancy, third trimester		671.53 Thrombosis NEC-antepart
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

ICD-10 to ICD-9 crosswalk for code O22.53 - cerebral venous thrombosis in pregnancy, third trimester based on the most recent General Equivalence Mappings (GEMS) information.