N22 Calculus of urinary tract in diseases classified elsewhere

Billable ICD-10-CM code, FY2026.

Code first

• underlying disease, such as:
• gout (M1A.-, M10.-)
• schistosomiasis (B65.0-B65.9)

Applies from N22 Calculus of urinary tract in diseases classified elsewhere

Code first

• underlying disease, such as:
• gout (M1A.-, M10.-)
• schistosomiasis (B65.0-B65.9)

MS-DRG index

Defines the logic of DRG(s) 693-694 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 592.9 Urinary calculus, unspecified (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.

Code annotations containing back-references to N22

Back-references to N22

• Use Additional: M1A Chronic gout ("Calculus of urinary tract in diseases classified elsewhere (N22)")
• Use Additional: M10 Gout ("Calculus of urinary tract in diseases classified elsewhere (N22)")

Back-references to N22

• Use Additional: M1A Chronic gout ("Calculus of urinary tract in diseases classified elsewhere (N22)")
• Use Additional: M10 Gout ("Calculus of urinary tract in diseases classified elsewhere (N22)")

Diagnosis Index entries for N22

• Calculus, calculi, calculous › xanthine
• Stone (s) › xanthine

Nearby codes

• N22 Calculus of urinary tract in diseases classified elsewhere (this code)