MS-DRG 690 – Kidney and Urinary Tract Infections without MCC
A Medical DRG in MDC 11 (Diseases & Disorders of the Kidney & Urinary Tract). Inpatient cases group to DRG 690 when the ICD-10-CM principal diagnosis is one of the 39 codes listed below and no secondary diagnosis on the MCC list is present. Its FY 2026 relative weight is 0.8095 with a geometric mean length of stay of 2.8 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 → 689; without MCC → 690.
Principal Diagnosis Codes 39 codes · 17 categories
A18 Tuberculosis of other organs4 codes
A36 Diphtheria1 code
- A36.85 Diphtheritic cystitis
A52 Late syphilis1 code
- A52.75 Syphilis of kidney and ureter
A54 Gonococcal infection1 code
- A54.01 Gonococcal cystitis and urethritis, unspecified
A56 Other sexually transmitted chlamydial diseases2 codes
A98 Other viral hemorrhagic fevers, not elsewhere classified1 code
- A98.5 Hemorrhagic fever with renal syndrome
B65 Schistosomiasis [bilharziasis]1 code
- B65.0 Schistosomiasis due to Schistosoma haematobium [urinary schistosomiasis]
B90 Sequelae of tuberculosis1 code
- B90.1 Sequelae of genitourinary tuberculosis
N10 Acute pyelonephritis1 code
- N10 Acute pyelonephritis
N11 Chronic tubulo-interstitial nephritis3 codes
N12 Tubulo-interstitial nephritis, not specified as acute or chronic1 code
- N12 Tubulo-interstitial nephritis, not specified as acute or chronic
N13 Obstructive and reflux uropathy2 codes
N15 Other renal tubulo-interstitial diseases1 code
- N15.1 Renal and perinephric abscess
N28 Other disorders of kidney and ureter, not elsewhere classified3 codes
N30 Cystitis12 codes
- N30.00 Acute cystitis without hematuria
- N30.01 Acute cystitis with hematuria
- N30.10 Interstitial cystitis (chronic) without hematuria
- N30.11 Interstitial cystitis (chronic) with hematuria
- N30.20 Other chronic cystitis without hematuria
- N30.21 Other chronic cystitis with hematuria
- N30.30 Trigonitis without hematuria
- N30.31 Trigonitis with hematuria
- N30.80 Other cystitis without hematuria
- N30.81 Other cystitis with hematuria
- N30.90 Cystitis, unspecified without hematuria
- N30.91 Cystitis, unspecified with hematuria
N34 Urethritis and urethral syndrome3 codes
N39 Other disorders of urinary system1 code
- N39.0 Urinary tract infection, site not specified
Procedure Codes
Frequently Asked Questions
What is MS-DRG 690?
MS-DRG 690 (Kidney and Urinary Tract Infections without MCC) is a medical DRG in MDC 11 (Diseases & Disorders of the Kidney & Urinary Tract). Its FY 2026 relative weight is 0.8095 with a geometric mean length of stay of 2.8 days.
What is the difference between DRG 689, 690?
All 2 share the same base category; the severity of secondary diagnoses separates them: 689 (with MCC), 690 (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 690?
39 ICD-10-CM principal diagnosis codes group to this DRG, spanning 17 three-character categories.
What is the relative weight of DRG 690?
The FY 2026 relative weight of this DRG is 0.8095, meaning reimbursement of roughly 0.81 times the average Medicare inpatient case. Multiply by a hospital's blended base rate for the approximate payment.
