The diagnosis code in the 4th position identifying the conditions(s) for which the beneficiary was receiving care
Comments
The principal diagnosis code is stored as the first diagnosis code (DGNSCD1).
Until 2009, there were up to 9 diagnosis codes; currently there are up to 25 (i.e., diagnosis codes 1–25). ICD-10 diagnosis codes were used starting October 2015.
The diagnosis version code (variables DGNS_VRSN_CD_1–DGNS_VRSN_CD_25) indicates whether this diagnosis code is ICD-9 or ICD-10.
The principal diagnosis code is stored as the first diagnosis code (DGNSCD1).
Until 2009, there were up to 9 diagnosis codes; currently there are up to 25 (i.e., diagnosis codes 1–25). ICD-10 diagnosis codes were used starting October 2015.
The diagnosis version code (variables DGNS_VRSN_CD_1–DGNS_VRSN_CD_25) indicates whether this diagnosis code is ICD-9 or ICD-10.
Source: NCH