Specific code 2015 ICD-9-CM Diagnosis Code 590.81
Pyelitis or pyelonephritis in diseases classified elsewhere
  • 2015
  • Billable Code
  • Manifestation Code
  • ICD-9-CM 590.81 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 590.81 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
Disease Synonyms
  • Mycoplasmal pyelonephritis
  • Pyelitis associated with another disorder
  • Pyelonephritis associated with another disorder
  • Pyelonephritis, secondary
  • Secondary pyelonephritis
  • Tuberculous pyelitis
  • Tuberculous pyelonephritis
Code First
  • Code first underlying disease, as:
ICD-9-CM Coding Information
  • 590.81 describes the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.
Convert to ICD-10-CM: 590.81 converts approximately to:
  • 2015 ICD-10-CM N16 Renal tubulo-interstitial disorders in diseases classified elsewhere
ICD-9-CM Volume 2 Index entries containing back-references to 590.81:
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 590.81 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.