Template:ICD10 Guideline Nephritic Syndrome

This template is used in ICD10 dx pages about nephritic syndrome. To use:

{{ICD10 Guideline Nephritic Syndrome}}

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• In ICD10 there are no codes specific for glomerulonephritis (GN) -- instead the various forms of that entity are included in the various codes for "Nephritic sydrome"
• Nephritic syndrome represents a class/category of renal diseases that are due to non-infectious inflammation of the glomerulus
  • Though non-infectious, a classic cause of GN is immune-mediated and elicited by PRIOR infection by a variety of organisms, though Streptococci is the classic (so-called Post-strep GN)
  • Although often primary, i.e. the etiology is auto-immune, there are numerous other conditions that can cause GNs (e.g. post-infectious which is an immune-mediated problem and not due to the organism itself; in association with other immune disorders such as Lupus and vasculitis; immune consequences of drug use such as iv heroin, others). When the etiology is NOT primary, combine the cause with the appropriate Nephritic syndrome code.
• Regarding the various codes for nephritic syndrome (Nephritic syndrome, acute, Nephritic syndrome, rapidly progressive, Nephritic syndrome, chronic, Nephritic syndrome, NOS)
  • They include
    • glomerulonephritis
    • nephritis
    • other inflammatory glomerular diseases
  • Don't get confused, another way to classify glomerular diseases is by what they look like under the microscope (e.g. minimal change, membranous, crecentic, etc) -- but in ICD10 these are all included within all the codes for nephritic syndrome.
• The difference between the various Nephritic syndrome codes is clinical onset and persistence:
  • code Nephritic syndrome, rapidly progressive if and only if the primary or renal team label it as "rapidly progressive", as in "Rapidly progressive GN"
  • if acute in presentation/onset, but they don't label it as "rapidly progressive", then use Nephritic syndrome, acute
  • if stated by the teams to be chronic, then use Nephritic syndrome, chronic
  • if nothing is said about it's onset or persistence, then use the wastebasket of Nephritic syndrome, NOS
• Important to distinguish the various Nephritic syndrome codes from Nephrotic syndrome

• a classic cause of GN (especially Nephritic syndrome, rapidly progressive is as an immune after-effect of Strep infection, so-called Post-strep GN). To code this we will add a new code B98, to be called Other specified infectious agents as the cause of diseases classified by other ICD10 code -- this new code, with the appropriate Streptoccus code, is then combined with the appropriate Nephritic syndrome code to get Post-strep GN