ICD-10-CM Alphabetic Index · FY 2026 37 Entries
Pyelonephritis in the ICD-10-CM Index ICD-10-CM
The main term Pyelonephritis carries 37 index entries pointing to 23 ICD-10-CM codes. Every indented line below refines the term by site, cause, or type. Verify any candidate code in the Tabular List before using it.
✓ Built from the official CMS FY 2026 index fileEffective Oct 1, 2025 – Sep 30, 2026
37
Index Entries
23
Codes Referenced
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Default Code
P
Letter
37 of 37 shown
ICD-10-CM
Index Entries Under Pyelonephritis 37 entries · 23 codes
Pyelonephritis
with
calculus see category N20
with hydronephrosis N13.6
contracted kidney N11.9
acute N10
calculous see category N20
with hydronephrosis N13.6
chronic N11.9
with calculus see category N20
with hydronephrosis N13.6
associated with ureteral obstruction or stricture N11.1
nonobstructive N11.8
with reflux (vesicoureteral) N11.0
obstructive N11.1
specified NEC N11.8
in (due to)
brucellosis A23.9
cryoglobulinemia (mixed) D89.1
cystinosis E72.04
diphtheria A36.84
glycogen storage disease E74.09
leukemia NEC C95.9 Non-billable
lymphoma NEC C85.90
multiple myeloma C90.0 Non-billable
obstruction N11.1
Salmonella infection A02.25
sarcoidosis D86.84
sepsis A41.9
Sjögren's disease M35.04
toxoplasmosis B58.83
transplant rejection T86.91
Wilson's disease E83.01
nonobstructive N12
with reflux (vesicoureteral) N11.0
chronic N11.8
syphilitic A52.75
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Related Index Terms
Source: Centers for Medicare & Medicaid Services, FY 2026 ICD-10-CM Index to Diseases and Injuries release files, effective October 1, 2025 through September 30, 2026.
