N13.3
N13.3 — Other and unspecified hydronephrosis
Non-billable headerICD-10-CM
N13.3 is a non-billable header ICD-10-CM code for other and unspecified hydronephrosis. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- hydronephrosis with infection (N13.6)
Risk adjustment
N13.3 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead N13.3
2 child codes. Green means billable.
Related codes at this level
Codes that share N13. If N13.3 is not quite right, the correct code is usually one of these.
- N13.0Hydronephrosis with ureteropelvic junction obstruction
- N13.1Hydronephrosis with ureteral stricture, not elsewhere classified
- N13.2Hydronephrosis with renal and ureteral calculous obstruction
- N13.4Hydroureter
- N13.5Crossing vessel and stricture of ureter without hydronephrosis
- N13.6Pyonephrosis
- N13.7Vesicoureteral-reflux
- N13.8Other obstructive and reflux uropathy
- N13.9Obstructive and reflux uropathy, unspecified
Questions about N13.3
- Is N13.3 a billable ICD-10-CM code?
- No. N13.3 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does N13.3 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Renal tubulo-interstitial diseases (N10-N16).
- What cannot be coded together with N13.3?
- N13.3 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.