DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 14

N10-N16 Renal tubulo-interstitial diseases (N10-N16)

Block N10-N16 groups 7 categories with 35 billable codes in FY2027.

Where it sits

  1. Chapter 14 Diseases of the genitourinary system (N00-N99)
  2. N10-N16 Renal tubulo-interstitial diseases (N10-N16)

Neighbouring blocks

Categories
7
Billable codes
35
CC codes
13
MCC codes
1
HCC V28 codes
0
New FY2027
0

Categories in N10-N16

  • N10

    Acute pyelonephritis

    Pyelonephritisacute → N10

    • Billable, no subdivisions
    • 1 CC
  • N11

    Chronic tubulo-interstitial nephritis

    Pyelonephrosis (obstructive) → N11.1

    • 4 billable codes
    • 3 CC
  • N12

    Tubulo-interstitial nephritis, not specified as acute or chronic

    Pyonephritis → N12

    • Billable, no subdivisions
    • 1 CC
  • N13

    Obstructive and reflux uropathy

    Hydroureter → N13.4

    • 18 billable codes
    • 8 CC
  • N14

    Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions

    Nephropathylead → N14.3

    • 6 billable codes
  • N15

    Other renal tubulo-interstitial diseases

    Granulomakidney → N15.8

    • 4 billable codes
    • 1 MCC
  • N16

    Renal tubulo-interstitial disorders in diseases classified elsewhere

    –

    • Billable, no subdivisions

Index main terms

  • Nephropathy → N13, N14, N15 (16 entries)
  • Pyelonephritis → N10, N11, N12, N13 (15 entries)
  • Hydronephrosis (atrophic) (early) (functionless) (intermittent) (primary) (secondary) NEC → N13 (14 entries)
  • Calculus, calculi, calculous → N13 (12 entries)
  • Obstruction, obstructed, obstructive → N11, N13 (12 entries)
  • Reflux → N11, N13 (12 entries)
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) → N10, N11, N12, N14, N15 (11 entries)
  • Stricture → N11, N13 (8 entries)
  • Disease, diseased → N12, N13, N15 (5 entries)
  • Pyelitis (congenital) (uremic) → N10, N11, N13 (5 entries)
  • Kink, kinking → N11, N13 (4 entries)
  • Uropathy → N13 (4 entries)
  • Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) → N13, N15 (3 entries)
  • Constriction → N13 (3 entries)
  • Infection, infected, infective (opportunistic) → N13, N15 (3 entries)

+29 more main terms; the search box finds them by word.

Block instructions

Includes

  • pyelonephritis

Excludes1

  • pyeloureteritis cystica (N28.85) N28.85

Notes that also apply

Chapter 14 instructions (Excludes2 8): printed on the chapter 14 page.