A pus-filled pocket of infection within the kidney tissue.
Because kidney abscess is rated as a urinary tract infection, the records that matter most are those showing how often infections recur and how intensively they must be treated. Hospital admission records documenting the number and length of inpatient stays each year directly support the 10% and 30% levels. Operative or procedure notes showing placement of a stent or nephrostomy tube for drainage, or records confirming continuous intensive management, support the 30% level. Prescription records or clinical notes showing suppressive antibiotic therapy and its duration support the 10% or 0% levels.
If your provider has documented reduced kidney function, lab results showing glomerular filtration rate measurements taken over at least three consecutive months become critical, because poor renal function shifts the rating to the renal dysfunction criteria. Statements from you or treating providers describing how frequent infections affect your daily activities or ability to work can help VA understand the full picture of your condition. Imaging or pathology records confirming the abscess and any structural changes to the kidney may also be relevant to your overall evaluation.
Conditions that are often caused or made worse by this one. If you have any of these, they may be claimable as secondary service connection.