N12: Tubulo-interstitial nephritis, not specified as acute or chronic
Your kidney has become inflamed.
There are normally 2 kidneys in the body. They filter blood and create urine. They thus help to detoxify the body. Furthermore, the kidneys regulate the blood pressure and salt content in the blood, among other things.
Each kidney consists of 3 layers of tissue. The outer layer is called the renal cortex. The renal cortex is where urine is produced. It also filters out substances from the body. The middle layer of the kidney is the renal medulla. The renal medulla consists of large numbers of renal tubules. Electrolytes are excreted or returned to the body through these tubules. The inside of the kidney contains the renal pelvis. This is where the urine from the kidney accumulates. The urine then flows into the bladder via the ureter.
Your renal tissue is inflamed. As a result, the renal cortex and the renal tubules stop working properly. There can be different reasons for this. For example, the kidneys may have been damaged by certain pathogens or certain types of medication. However, other conditions can also damage the kidneys.
Symptoms vary, mainly depending on where the kidney is damaged.
Additional indicator
On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.
- G: Confirmed diagnosis
- V: Tentative diagnosis
- Z: Condition after
- A: Excluded diagnosis
- L: Left
- R: Right
- B: Both sides
Further information
Note
This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.
Source
Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).