N22: ICD10 Code for Calculus of urinary tract in diseases classified elsewhere
N22 is the ICD10 code used for documenting Calculus of urinary tract in diseases classified elsewhere in urology, nephrology, and emergency medicine settings.

N22 refers to Calculus of urinary tract in diseases classified elsewhere, describing various forms of urinary tract stone disease that cause obstruction, severe pain (renal colic), and potential kidney damage if not promptly treated.
Symptoms
- Severe flank or abdominal pain – Hallmark of renal colic (N20, N23)
- Hematuria (blood in urine) – Due to stone irritation of urinary tract walls
- Frequent or painful urination – Especially in lower urinary tract stones (N21)
- Nausea and vomiting – Common with acute obstruction
- Urinary urgency – Particularly when bladder stones are involved
Diagnosis
Diagnosis of Calculus of urinary tract in diseases classified elsewhere relies on clinical presentation, urinalysis (for blood or crystals), non-contrast CT scans of the abdomen/pelvis (gold standard), renal ultrasound, and plain abdominal X-rays in certain cases.
ICD10 Code Usage
ICD10 code N22 is used by urologists, nephrologists, emergency medicine physicians, and internists to document urinary stone disease, guide treatment such as lithotripsy, ureteroscopy, or surgery, and monitor recurrence risk.
Related Codes
- N20 – Calculus of kidney and ureter
- N21 – Calculus of lower urinary tract
- N23 – Unspecified renal colic
FAQs
Q1: What is ICD10 code N22?
A: It refers to Calculus of urinary tract in diseases classified elsewhere, covering kidney, ureter, bladder, and unspecified urinary stones presenting with pain, hematuria, or urinary obstruction.
Q2: What is the difference between N20 and N21?
A: N20 refers to stones in the kidney or ureter, while N21 refers to stones located in the bladder or urethra (lower urinary tract).
Q3: What is N23 (unspecified renal colic)?
A: Used when a patient presents with classical renal colic symptoms but the specific stone location or cause is not yet confirmed through imaging.
Q4: What causes urinary tract calculi?
A: Causes include dehydration, dietary factors (high oxalate or protein intake), infections, metabolic disorders, and family history.
Q5: How are urinary stones treated?
A: Small stones often pass spontaneously; larger stones may require medications, shock wave lithotripsy, ureteroscopy, or surgical removal depending on size and location.
Conclusion
ICD10 code N22 ensures accurate diagnosis, documentation, and management of Calculus of urinary tract in diseases classified elsewhere, enabling effective treatment to relieve symptoms, prevent complications, and reduce future stone formation risks.

Want to simplify your note writing? Try our free AI Medical Scribe now.
Trusted by leading healthcare providers to automate workflow



