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  3. Diagnosis Codes in MS-DRG 694 - Urinary Stones Without MCC

Diagnosis Codes in MS-DRG 694 - Urinary Stones Without MCC

The Medicare Severity Diagnosis-Related Group (MS-DRG) is a patient classification system used to categorize hospital cases based on clinical similarity and expected resource use. MS-DRGs organize all possible principal diagnoses into mutually exclusive groups known as Major Diagnostic Categories (MDCs), which help determine reimbursement under the Medicare Inpatient Prospective Payment System.

This section lists the diagnosis codes included in MS-DRG V42.0: Urinary Stones without MCC from October 1, 2024, through September 30, 2025.

MS-DRG: 694

MS-DRG Title: Urinary Stones without MCC

MCD: 11

Relative Weight: 0.7814 Relative Weight
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Geometric LOS: 0.78 Geometric Length of Stay
The geometric mean length of stay (GMLOS) is used by Medicare to calculate the reimbursement for patients whose medical treatment takes a much longer or shorter time than average.

Arithmetic LOS: 2.10 Arithmetic Length of Stay
The average length of stay (ALOS) reflects the average number of days a patient spends in a hospital for each admission.

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    • N22 - Calculus of urinary tract in diseases classified elsewhere

    • N23 - Unspecified renal colic

  • N11 - Chronic tubulo-interstitial nephritis

    • N11.1 - Chronic obstructive pyelonephritis

  • N13 - Obstructive and reflux uropathy

    • 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

    • N13.4 - Hydroureter

    • N13.8 - Other obstructive and reflux uropathy

  • N13.3 - Other and unspecified hydronephrosis

    • N13.30 - Unspecified hydronephrosis

    • N13.39 - Other hydronephrosis

  • N20 - Calculus of kidney and ureter

    • N20.0 - Calculus of kidney

    • N20.1 - Calculus of ureter

    • N20.2 - Calculus of kidney with calculus of ureter

    • N20.9 - Urinary calculus, unspecified

  • N21 - Calculus of lower urinary tract

    • N21.0 - Calculus in bladder

    • N21.1 - Calculus in urethra

    • N21.8 - Other lower urinary tract calculus

    • N21.9 - Calculus of lower urinary tract, unspecified