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ICD-10 information

Learn about crosswalks (GEMs)

GEM - General Equivalency Mappings
Mapping resources: CMS provided a quick tour of its ICD-10 mapping system, which is posted on its Web site. The crosswalk, known as “general equivalency mappings” or “GEMs,” will help practices convert the existing ICD-9 codes to the new ICD-10 codes, and vice-versa.

The GEMs are a tool that can be used to convert applications and data from ICD-9-CM to ICD-10-CM/PCS and vice versa. The GEMs are a comprehensive translation dictionary that can be used to accurately and effectively convert any ICD-9-CM-based application to ICD-10-CM/PCS, or translate any ICD-9-CM-based data, including data for tracking quality, recording morbidity/mortality, and calculating reimbursement.

They can be found on these sites:

Example:

4 ICD-9-CM codes are replaced by 28 ICD-10-CM codes
ICD-9
 
ICD-10

555.0 Regional enteritis of small intestine
555.1 Regional enteritis of large intestine
555.2 Regional enteritis of small intestine with large intestine
555.9 Regional enteritis of unspecified site

 

K50.00 Crohn's disease of small intestine without complications
K50.011 Crohn's disease of small intestine with rectal bleeding
K50.012 Crohn's disease of small intestine with intestinal obstruction
K50.013 Crohn's disease of small intestine with fistula
K50.014 Crohn's disease of small intestine with abscess
K50.018 Crohn's disease of small intestine with other complication
K50.019 Crohn's disease of small intestine with unspecified complications
K50.10 Crohn's disease of large intestine without complications
K50.111 Crohn's disease of large intestine with rectal bleeding



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