|
NDX indicates the total number of diagnoses (valid and invalid) coded on the discharge record. In assigning NDX, the first listed diagnosis is included in the count, even if it is blank, so long as there is a secondary diagnosis present (see table below).
|
Value
|
Description
|
| 0 |
No diagnoses are coded on the record. |
| 1 |
Only the first listed diagnosis (DX1) is coded. All secondary diagnoses are blank. |
| 2 |
One secondary diagnosis (DX2) is coded. The first listed diagnosis (DX1) may be coded or blank. |
| 3 |
The second and third diagnoses (DX2 and DX3) are coded. The first listed diagnosis (DX1) may be coded or blank. |
| etc. |
|
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