Tubulo-interstitial nephritis, not specified as acute or chronic
Billable / specific
N12 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.
Inclusion terms
Includes
- pyelonephritis
Applicable to
- Interstitial nephritis NOS
- Pyelitis NOS
- Pyelonephritis NOS
Excludes1
Not coded here — never report together with this code.
Excludes2
Not included here — may be reported together when both conditions exist.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Also known as
- Interstitial nephritis NOS
- Pyelitis NOS
- Pyelonephritis NOS
- Disease, diseased, antiglomerular basement membraneantibody, tubulo-interstitial nephritis
- Disease, diseased, renal, with interstitial nephritis
- Nephritis, nephritic, antitubular basement membraneNEC
- Nephritis, nephritic, tubulo-interstitial
- Pyelonephritis, nonobstructive
- Pyonephritis
Related codes
- N10Acute pyelonephritisBillable
- N11Chronic tubulo-interstitial nephritisHeader
- N13Obstructive and reflux uropathyHeader
- N14Drug- and heavy-metal-induced tubulo-interstitial and tubular conditionsHeader
- N15Other renal tubulo-interstitial diseasesHeader
- N16Renal tubulo-interstitial disorders in diseases classified elsewhereBillable