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. Author manuscript; available in PMC: 2013 May 13.
Published in final edited form as: Ann Intern Med. 2012 Sep 4;157(5):305–312. doi: 10.7326/0003-4819-157-5-201209040-00003

Appendix Table 2.

ICD-9-CM Diagnosis Codes Used to Identify Urinary Tract Infections (1–3) ICD-9-CM diagnosis codes chosen to identify urinary tract infections for non-payment, when combined with the catheter-association code 996.64 and listed as “not present-on-admission.”

Code Description
112.2 Candidiasis of other urogenital site
590.10 Acute pyelonephritis, without lesion of renal medullary necrosis
590.11 Acute pyelonephritis, with lesion of renal medullary necrosis
590.2 Renal and perinephric abscess
590.3 Pyeloureteritis cystica
590.80 Pyelonephritis, unspecified
590.81 Pyelitis or pyelonephritis in diseases classified elsewhere
595.0 Acute cystitis
597.0 Urethral abscess
599.0 Urinary tract infection, site not specified

Note: Cases of CAUTIs as the primary reason for admission were identified by having the catheter code (ICD-9-CM: 996.64) listed as the first diagnosis, or having a UTI code listed as the first diagnosis and a catheter code listed among the secondary diagnoses. Cases of UTI as a secondary diagnosis (meaning not the primary reason for admission) were identified with a secondary diagnosis UTI code without the catheter code. Secondary diagnosis catheter-associated UTIs were identified by the catheter code without a UTI ICD-9-CM code as principal diagnosis.

a

Source: International Classification of Diseases, Ninth Revision, Clinical Modification Codes