2020 ICD-10-CM Diagnosis Code N10

Acute pyelonephritis

    2016 2017 - Revised Code 2018 2019 2020 Billable/Specific Code
  • N10 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM N10 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N10 - other international versions of ICD-10 N10 may differ.
Applicable To
  • Acute infectious interstitial nephritis
  • Acute pyelitis
  • Acute tubulo-interstitial nephritis
  • Hemoglobin nephrosis
  • Myoglobin nephrosis
Use Additional
Use Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • code (B95-B97
    ICD-10-CM Range B95-B97

    Bacterial and viral infectious agents

    Note
    • These categories are provided for use as supplementary or additional codes to identify the infectious agent(s) in diseases classified elsewhere.
    • B95 Streptococcus, Staphylococcus, and Enter...
    • B96 Other bacterial agents as the cause of d...
    • B97 Viral agents as the cause of diseases cl...
    ), to identify infectious agent.
The following code(s) above N10 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to N10:
  • N00-N99
    2020 ICD-10-CM Range N00-N99

    Diseases of the genitourinary system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the genitourinary system
  • N10-N16
    2020 ICD-10-CM Range N10-N16

    Renal tubulo-interstitial diseases

    Includes
    • pyelonephritis
    Type 1 Excludes
    • pyeloureteritis cystica (N28.85)
    Renal tubulo-interstitial diseases
Approximate Synonyms
  • Acute drug induced tubulointerstitial nephritis
  • Acute interstitial nephritis
  • Acute pyelonephritis (kidney infection)
ICD-10-CM N10 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 689 Kidney and urinary tract infections with mcc
  • 690 Kidney and urinary tract infections without mcc
  • 791 Prematurity with major problems
  • 793 Full term neonate with major problems

Convert N10 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): Revised code
    • New description: Acute pyelonephritis
    • 2016 description: Acute tubulo-interstitial nephritis
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
Code annotations containing back-references to N10:
  • Type 1 Excludes: N00
    ICD-10-CM Diagnosis Code N00

    Acute nephritic syndrome

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • acute glomerular disease
    • acute glomerulonephritis
    • acute nephritis
    Type 1 Excludes
    • acute tubulo-interstitial nephritis (N10)
    • nephritic syndrome NOS (N05.-)

Diagnosis Index entries containing back-references to N10:
  • Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic) N05.9
    ICD-10-CM Diagnosis Code N05.9

    Unspecified nephritic syndrome with unspecified morphologic changes

      2016 2017 2018 2019 2020 Billable/Specific Code
    • tubulo-interstitial (in) N12
      ICD-10-CM Diagnosis Code N12

      Tubulo-interstitial nephritis, not specified as acute or chronic

        2016 2017 2018 2019 2020 Billable/Specific Code
      Applicable To
      • Interstitial nephritis NOS
      • Pyelitis NOS
      • Pyelonephritis NOS
      Type 1 Excludes
      • calculous pyelonephritis (N20.9)
      • acute N10 (infectious)
  • Nephrosis, nephrotic (Epstein's) (syndrome) (congenital) N04.9
    ICD-10-CM Diagnosis Code N04.9

    Nephrotic syndrome with unspecified morphologic changes

      2016 2017 2018 2019 2020 Billable/Specific Code
    • hemoglobin N10
    • myoglobin N10
  • Pyelitis (congenital) (uremic) - see also Pyelonephritis
    • acute N10
  • Pyelonephritis - see also Nephritis, tubulo-interstitial
    • acute N10

ICD-10-CM Codes Adjacent To N10
N07.1 Hereditary nephropathy, not elsewhere classified with focal and segmental glomerular lesions
N07.2 Hereditary nephropathy, not elsewhere classified with diffuse membranous glomerulonephritis
N07.3 Hereditary nephropathy, not elsewhere classified with diffuse mesangial proliferative glomerulonephritis
N07.4 Hereditary nephropathy, not elsewhere classified with diffuse endocapillary proliferative glomerulonephritis
N07.5 Hereditary nephropathy, not elsewhere classified with diffuse mesangiocapillary glomerulonephritis
N07.6 Hereditary nephropathy, not elsewhere classified with dense deposit disease
N07.7 Hereditary nephropathy, not elsewhere classified with diffuse crescentic glomerulonephritis
N07.8 Hereditary nephropathy, not elsewhere classified with other morphologic lesions
N07.9 Hereditary nephropathy, not elsewhere classified with unspecified morphologic lesions
N08 Glomerular disorders in diseases classified elsewhere
N10 Acute pyelonephritis
N11 Chronic tubulo-interstitial nephritis
N11.0 Nonobstructive reflux-associated chronic pyelonephritis
N11.1 Chronic obstructive pyelonephritis
N11.8 Other chronic tubulo-interstitial nephritis
N11.9 Chronic tubulo-interstitial nephritis, unspecified
N12 Tubulo-interstitial nephritis, not specified as acute or chronic
N13 Obstructive and reflux uropathy
N13.0 Hydronephrosis with ureteropelvic junction obstruction
N13.1 Hydronephrosis with ureteral stricture, not elsewhere classified
N13.2 Hydronephrosis with renal and ureteral calculous obstruction

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.