All ICD10 Codes

N21.9

Billable
ChapterN00–N99
Ranksubcategory
Official Description

Calculus of lower urinary tract, unspecified

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 14: Diseases of the Genitourinary System (N00-N99).

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • calculus of urinary tract NOS (N20.9)
General instructions are available for the parent sections:
View CH14 NotesView N21 Notes

Clinical Hierarchy

BillableHas subcodes
CH14Diseases of the genitourinary system (N00-N99)
N20-N23Urolithiasis (N20-N23)
N21Calculus of lower urinary tract
N21.9Calculus of lower urinary tract, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to N21.9:

categoryN21
Calculus of lower urinary tract
View context instructions
chapterCH14
Diseases of the genitourinary system (N00-N99)
View context instructions

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 693
Urinary Stones with MCC
DRG 694
Urinary Stones without MCC

Cross Reference

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