- N21.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2024 edition of ICD-10-CM N21.9 became effective on October 1, 2022.
- This is the American ICD-10-CM version of N21.9 – other international versions of ICD-10 N21.9 may differ.
ICD-10-CM N21.9 is grouped within Diagnostic Related Group(s):
Type 1 Excludes
- calculus of urinary tract NOS (N20.9)
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
- 2024 (effective 10/1/2022): No change
Diagnosis Index entries containing back-references to N21.9:
- lower > urinary (duct) (impacted) (passage) (tract) N20.9
- lower tract > urinary (duct) (impacted) (passage) N20.9