2027 ICD-10-CM Diagnosis Code N22Calculus of urinary tract in diseases classified elsewhere
ICD-10-CM Codes›N00–N99›N20-N23›N22
- Billable — Valid for Submission
- Not Chronic
N22 is a billable ICD-10-CM diagnosis code for calculus of urinary tract in diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 693 through 694. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Calculus of urinary tract.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for N22.
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to N22: its own notes plus those printed at Chapter 14. A note printed at a category, block or chapter applies to every code under it.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Code First
The underlying condition named in the note is sequenced before this code.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name N22, its category, or a range that includes it.
Excludes2 1
These codes carry an Excludes2 note naming N22: its condition is not part of those codes, and both may be reported when the patient has both.
- Block N25-N29 Other disorders of kidney and ureter
Use Additional Code 2
These codes say to use an additional code from the note, and N22 is one of the codes named.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Bladder Diseases
The bladder is a hollow organ in your lower abdomen that stores urine. Many conditions can affect your bladder. Some common ones are:
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N22 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N22Overview
What is the ICD-10 code for calculus of urinary tract in diseases classified elsewhere?
The ICD-10-CM code for calculus of urinary tract in diseases classified elsewhere is N22. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is N22 (Calculus of urinary tract in diseases classified elsewhere) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report calculus of urinary tract in diseases classified elsewhere on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does N22 group to?
On inpatient claims, calculus of urinary tract in diseases classified elsewhere maps to MS-DRG 694, 693, with relative weights from 0.7815 to 1.3155 depending on complications. Higher weights mean higher Medicare reimbursement.
Can N22 be a principal diagnosis?
No. This is a manifestation code: calculus of urinary tract in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
