MS-DRG 694 – Urinary Stones without MCC
A Medical DRG in MDC 11 (Diseases & Disorders of the Kidney & Urinary Tract). Inpatient cases group to DRG 694 when the ICD-10-CM principal diagnosis is one of the 18 codes listed below and no secondary diagnosis on the MCC list is present. Its FY 2026 relative weight is 0.7817 with a geometric mean length of stay of 2.1 days.
Severity family
The grouper first assigns the case to MDC 11 from the principal diagnosis and finds no qualifying operating-room procedure (this is a Medical DRG; ICD-10-PCS codes do not drive assignment here), then applies the severity split from secondary diagnoses: with MCC → 693; without MCC → 694.
Principal Diagnosis Codes 18 codes · 6 categories
N11 Chronic tubulo-interstitial nephritis1 code
- N11.1 Chronic obstructive pyelonephritis
N13 Obstructive and reflux uropathy7 codes
- N13.0 Hydronephrosis with ureteropelvic junction obstruction
- N13.1 Hydronephrosis with ureteral stricture, not elsewhere classified
- N13.2 Hydronephrosis with renal and ureteral calculous obstruction
- N13.30 Unspecified hydronephrosis
- N13.39 Other hydronephrosis
- N13.4 Hydroureter
- N13.8 Other obstructive and reflux uropathy
N20 Calculus of kidney and ureter4 codes
N21 Calculus of lower urinary tract4 codes
N22 Calculus of urinary tract in diseases classified elsewhere1 code
- N22 Calculus of urinary tract in diseases classified elsewhere
N23 Unspecified renal colic1 code
- N23 Unspecified renal colic
Procedure Codes
Frequently Asked Questions
What is MS-DRG 694?
MS-DRG 694 (Urinary Stones without MCC) is a medical DRG in MDC 11 (Diseases & Disorders of the Kidney & Urinary Tract). Its FY 2026 relative weight is 0.7817 with a geometric mean length of stay of 2.1 days.
What is the difference between DRG 693, 694?
All 2 share the same base category; the severity of secondary diagnoses separates them: 693 (with MCC), 694 (without MCC). A major complication or comorbidity (MCC) places the case in the highest-weighted DRG of the family; a CC in the middle; neither in the lowest.
How many diagnosis codes group to DRG 694?
18 ICD-10-CM principal diagnosis codes group to this DRG, spanning 6 three-character categories.
What is the relative weight of DRG 694?
The FY 2026 relative weight of this DRG is 0.7817, meaning reimbursement of roughly 0.78 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
