DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

N22 diagnosis code · Billable category · FY2027

N22 Calculus of urinary tract in diseases classified elsewhere

  • Billable
  • Not CC/MCC
  • POA reported

N22 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N20-N23 Urolithiasis (N20-N23)
  3. N22 Calculus of urinary tract in diseases classified elsewhere
CC / MCC
Neither
MS-DRG
693-694
HCC V28
–
POA
Reported
Code Editor
Manifestation
Index entries
2

Instructions

At N22

Code first

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

Notes that also apply

Chapter 14 instructions (Excludes2 8): printed on the chapter 14 page.

Index entries

  • Calculus, calculi, calculousxanthine → E79.82 [N22]
  • Stone(s)xanthine → E79.82 [N22]

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for N22
CC / MCCNeither
Appendix BMDC 11 Diseases and Disorders of the Kidney and Urinary Tract, MS-DRG 693-694 (Urinary Stones with MCC…)
Code EditorManifestation code: not allowed as principal diagnosis
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy