ICD-10-CM › N00-N99 › N10-N16 › N11 Chronic tubulo-interstitial nephritis › N11.9
Chronic tubulo-interstitial nephritis, unspecified
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Chronic tubulo-interstitial nephritis, unspecified
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from N11 Chronic tubulo-interstitial nephritis
Use additional code
- code (B95-B97), to identify infectious agent.
Includes
- chronic infectious interstitial nephritis
- chronic pyelitis
- chronic pyelonephritis
Inherited from the N10-N16 section Renal tubulo-interstitial diseases (N10-N16)
Excludes1 - never coded here
- pyeloureteritis cystica (N28.85)
Includes
- pyelonephritis
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Pyelitis
- Nephropathy
- Glomerulitis
- Cystopyelitis
- Pyelocystitis
- Glomerulopathy
- Klebs' disease
- Pyelonephritis
- Bright's disease
- Glomerulonephritis
- Syndrome > nephritic
- Glomerular > nephritis
- Nephrocystitis, pustular
- Disease, diseased > Klebs'
- Disease, diseased > Bright's
- Nephritis, nephritic > septic
- Disease, diseased > glomerular
- Nephritis, nephritic > purulent
- Nephritis, nephritic > ascending
- Nephritis, nephritic > infective
- Nephritis, nephritic > suppurative
- Nephritis, nephritic > interstitial
- Nephritis, nephritic > tubal, tubular
- Nephropathy > with > glomerular lesion
- Inflammation, inflamed, inflammatory > kidney
- Disease, diseased > renal > with > glomerular lesion
- Contraction, contracture, contracted > kidney > pyelonephritic
- Pyelitis > chronic
- Pyelonephritis > chronic
- Pyelonephrosis > chronic
- Pyelitis > with > contracted kidney
- Pyelonephritis > with > contracted kidney
- Nephritis, nephritic > tubulo-interstitial > chronic
Codes in the same group
| Code | Description | Status |
|---|---|---|
| N11.0 | Nonobstructive reflux-associated chronic pyelonephritis | Valid |
| N11.1 | Chronic obstructive pyelonephritis | Valid |
| N11.8 | Other chronic tubulo-interstitial nephritis | Valid |