2020 ICD-10-CM Diagnosis Code N23

Unspecified renal colic

    2016 2017 2018 2019 2020 Billable/Specific Code
  • N23 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 N23 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of N23 - other international versions of ICD-10 N23 may differ.
The following code(s) above N23 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 N23:
  • 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
Approximate Synonyms
  • Renal colic
  • Renal colic (pain from kidney stone)
  • Ureteral colic
  • Ureteric colic
Clinical Information
  • A disorder characterized by paroxysmal and severe flank marked discomfort radiating to the inguinal area. Often, the cause is the passage of kidney stones.
  • A severe pain in the lower back radiating to the groin, scrotum, and labia which is most commonly caused by a kidney stone (renal calculus) passing through the ureter or by other urinary track blockage. It is often associated with nausea, vomiting, fever, restlessness, dull pain, frequent urination, and hematuria.
  • Paroxysmal and severe flank pain radiating to the inguinal area. It is caused by the passage of a kidney stone through the ureter.
ICD-10-CM N23 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 693 Urinary stones with mcc
  • 694 Urinary stones without mcc

Convert N23 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): No change
  • 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 N23:
  • Type 1 Excludes: R10
    , R52
    ICD-10-CM Diagnosis Code R10

    Abdominal and pelvic pain

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • renal colic (N23)
    Type 2 Excludes
    • dorsalgia (M54.-)
    • flatulence and related conditions (R14.-)
    ICD-10-CM Diagnosis Code R52

    Pain, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Acute pain NOS
    • Generalized pain NOS
    • Pain NOS
    Type 1 Excludes
    • acute and chronic pain, not elsewhere classified (G89.-)
    • localized pain, unspecified type - code to pain by site, such as:
    • abdomen pain (R10.-)
    • back pain (M54.9)
    • breast pain (N64.4)
    • chest pain (R07.1-R07.9)
    • ear pain (H92.0-)
    • eye pain (H57.1)
    • headache (R51)
    • joint pain (M25.5-)
    • limb pain (M79.6-)
    • lumbar region pain (M54.5)
    • pelvic and perineal pain (R10.2)
    • shoulder pain (M25.51-)
    • spine pain (M54.-)
    • throat pain (R07.0)
    • tongue pain (K14.6)
    • tooth pain (K08.8)
    • renal colic (N23)
    • pain disorders exclusively related to psychological factors (F45.41)
  • Type 2 Excludes: G89
    ICD-10-CM Diagnosis Code G89

    Pain, not elsewhere classified

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Code Also
    • related psychological factors associated with pain (F45.42)
    Type 1 Excludes
    • generalized pain NOS (R52)
    • pain disorders exclusively related to psychological factors (F45.41)
    • pain NOS (R52)
    Type 2 Excludes

Diagnosis Index entries containing back-references to N23:
  • Colic (bilious) (infantile) (intestinal) (recurrent) (spasmodic) R10.83
    ICD-10-CM Diagnosis Code R10.83

    Colic

      2016 2017 2018 2019 2020 Billable/Specific Code Pediatric Dx (0-17 years)
    Applicable To
    • Colic NOS
    • Infantile colic
    Type 1 Excludes
    • colic in adult and child over 12 months old (R10.84)
    • kidney N23
    • nephritic N23
    • renal N23
    • ureter N23
  • Nephralgia N23
  • Pain(s) R52
    - see also Painful
    ICD-10-CM Diagnosis Code R52

    Pain, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Acute pain NOS
    • Generalized pain NOS
    • Pain NOS
    Type 1 Excludes
    • acute and chronic pain, not elsewhere classified (G89.-)
    • localized pain, unspecified type - code to pain by site, such as:
    • abdomen pain (R10.-)
    • back pain (M54.9)
    • breast pain (N64.4)
    • chest pain (R07.1-R07.9)
    • ear pain (H92.0-)
    • eye pain (H57.1)
    • headache (R51)
    • joint pain (M25.5-)
    • limb pain (M79.6-)
    • lumbar region pain (M54.5)
    • pelvic and perineal pain (R10.2)
    • shoulder pain (M25.51-)
    • spine pain (M54.-)
    • throat pain (R07.0)
    • tongue pain (K14.6)
    • tooth pain (K08.8)
    • renal colic (N23)
    • pain disorders exclusively related to psychological factors (F45.41)
    • kidney N23
    • ureter N23
    • urinary N23 (organ) (system)
  • Ureteralgia N23

ICD-10-CM Codes Adjacent To N23
N20.0 Calculus of kidney
N20.1 Calculus of ureter
N20.2 Calculus of kidney with calculus of ureter
N20.9 Urinary calculus, unspecified
N21 Calculus of lower urinary tract
N21.0 Calculus in bladder
N21.1 Calculus in urethra
N21.8 Other lower urinary tract calculus
N21.9 Calculus of lower urinary tract, unspecified
N22 Calculus of urinary tract in diseases classified elsewhere
N23 Unspecified renal colic
N25 Disorders resulting from impaired renal tubular function
N25.0 Renal osteodystrophy
N25.1 Nephrogenic diabetes insipidus
N25.8 Other disorders resulting from impaired renal tubular function
N25.81 Secondary hyperparathyroidism of renal origin
N25.89 Other disorders resulting from impaired renal tubular function
N25.9 Disorder resulting from impaired renal tubular function, unspecified
N26 Unspecified contracted kidney
N26.1 Atrophy of kidney (terminal)
N26.2 Page kidney

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