The GEMs are a tool you can use to convert data from
ICD-9-CM to ICD-10-CM and ICD-10-PCS and vice versa. The GEMs are also known as
crosswalks as they provide important information linking codes of one system
with codes in the other system. The GEMs are a comprehensive translation
dictionary that can be used to accurately and effectively translate any
ICD-9-CM-based data, including data for:
™™
Tracking quality;
™™
Recording morbidity/mortality;
™™
Calculating reimbursement; or Converting any ICD-9-CM-based application to
ICD-10-CM/PCS such as:
Payment systems;
Payment and coverage edits;
Risk adjustment logic;
Quality measures; and A variety of research applications involving trend data.
Mapping from ICD-10-CM
and ICD-10-PCS codes back to ICD-9-CM codes is known as backward mapping.
Mapping from ICD-9-CM codes to ICD-10-CM and ICD-10-PCS codes is known as
forward mapping. The GEMs are complete in their description of all the mapping
possibilities as well as when there are new concepts in ICD-10 that are not
found in ICD-9-CM. All ICD-9-CM codes and all ICD-10-CM/PCS codes are included
in the collective GEMs:
™™
All ICD-10-CM codes are in the ICD-10-CM to
ICD-9-CM GEMs;
™™
All ICD-9-CM Diagnosis Codes are in the ICD-9-CM to
ICD-10-CM GEMs;
™™
All ICD-10-PCS codes are in the ICD-10-PCS to ICD-9-CM
GEMs; and
™™
All ICD-9-CM Procedure Codes are in the ICD-9-CM to
ICD-10-PCS GEMs.
ICD-9-CM to ICD-10-CM and ICD-10-PCS and vice versa. The GEMs are also known as
crosswalks as they provide important information linking codes of one system
with codes in the other system. The GEMs are a comprehensive translation
dictionary that can be used to accurately and effectively translate any
ICD-9-CM-based data, including data for:
™™
Tracking quality;
™™
Recording morbidity/mortality;
™™
Calculating reimbursement; or Converting any ICD-9-CM-based application to
ICD-10-CM/PCS such as:
Payment systems;
Payment and coverage edits;
Risk adjustment logic;
Quality measures; and A variety of research applications involving trend data.
Mapping from ICD-10-CM
and ICD-10-PCS codes back to ICD-9-CM codes is known as backward mapping.
Mapping from ICD-9-CM codes to ICD-10-CM and ICD-10-PCS codes is known as
forward mapping. The GEMs are complete in their description of all the mapping
possibilities as well as when there are new concepts in ICD-10 that are not
found in ICD-9-CM. All ICD-9-CM codes and all ICD-10-CM/PCS codes are included
in the collective GEMs:
™™
All ICD-10-CM codes are in the ICD-10-CM to
ICD-9-CM GEMs;
™™
All ICD-9-CM Diagnosis Codes are in the ICD-9-CM to
ICD-10-CM GEMs;
™™
All ICD-10-PCS codes are in the ICD-10-PCS to ICD-9-CM
GEMs; and
™™
All ICD-9-CM Procedure Codes are in the ICD-9-CM to
ICD-10-PCS GEMs.