Convert ICD-10 Code E05.21 to ICD-9

Source ICD-10 Code		Target ICD-9 Code
E05.21 Thyrotxcosis w toxic multinodular goiter w thyrotoxic crisis		242.21 Tox multnod goit w cris
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.
E05.21 Thyrotxcosis w toxic multinodular goiter w thyrotoxic crisis		242.31 Tox nod goiter w crisis
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 E05.21 - thyrotoxicosis with toxic multinodular goiter with thyrotoxic crisis or storm based on the most recent General Equivalence Mappings (GEMS) information.