- N11.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2023 edition of ICD-10-CM N11.9 became effective on October 1, 2022.
- This is the American ICD-10-CM version of N11.9 – other international versions of ICD-10 N11.9 may differ.
ICD-10-CM N11.9 is grouped within Diagnostic Related Group(s):
- 689 Kidney and urinary tract infections with mcc
- 690 Kidney and urinary tract infections without mcc
- 791 Prematurity with major problems
- 793 Full term neonate with major problems
Applicable To
- Chronic interstitial nephritis NOS
- Chronic pyelitis NOS
- Chronic pyelonephritis NOS
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2016 (effective 10/1/2015): No change
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- 2022 (effective 10/1/2021): No change
- 2023 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to N11.9:
- chronic (infectious) > tubulo-interstitial (in) N12
- contracted kidney > with
- chronic > Pyelitis (congenital) (uremic)
- contracted kidney > with
- chronic > Pyelonephritis
- chronic > Pyelonephrosis (obstructive) N11.1