ICD-10 code for tuberculous pyonephrosis

The ICD-10-CM code for tuberculous pyonephrosis is A18.11 (Tuberculosis of kidney and ureter).

Within A18.1 (tuberculosis of genitourinary system), A18.11 is specifically for tuberculosis of kidney and ureter. Related codes cover unspecified (A18.10), tuberculosis of bladder (A18.12), tuberculosis of other urinary organs (A18.13), tuberculosis of prostate (A18.14), tuberculosis of other male genital organs (A18.15), tuberculosis of cervix (A18.16), tuberculous female pelvic inflammatory disease (A18.17) and tuberculosis of other female genital organs (A18.18).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 689 (Kidney and Urinary Tract Infections with MCC, relative weight 1.1415), DRG 690 (Kidney and Urinary Tract Infections without MCC, relative weight 0.801), DRG 974 (HIV with Major Related Condition with MCC, relative weight 3.0506), DRG 975 (HIV with Major Related Condition with CC, relative weight 1.3252) and DRG 976 (HIV with Major Related Condition without CC/MCC, relative weight 0.8124), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract) and MDC 25 (Human Immunodeficiency Virus Infections), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.