2027 ICD-10-CM Diagnosis Code K59.2Neurogenic bowel, not elsewhere classified

ICD-10-CM Codes›K00–K95›K55-K64›K59

ICD-10-CM K59.2
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K59.2 is a billable ICD-10-CM diagnosis code for neurogenic bowel, not elsewhere classified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 391 through 392. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 15 closely related codes. Coders also document this condition as neurogenic bowel. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified gastrointestinal disorders.

Code Identity

ICD-10-CM Code
K59.2
Billable Status
Yes — Valid for Submission
Code Describes
Neurogenic bowel, not elsewhere classified
Short Description
Neurogenic bowel, not elsewhere classified
Same as the full description in the CMS dataset.
Parent Code
K59
Other functional intestinal disorders

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK59Other functional intestinal disorders
This CodeK59.2Neurogenic bowel, not elsewhere classified

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Neurogenic bowel

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K59.2: its own notes plus those printed at K59 and Chapter 11. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From K59 Other functional intestinal disorders applies to 14 codes
  • change in bowel habit NOS (R19.4)
  • intestinal malabsorption (K90.-)
  • psychogenic intestinal disorders (F45.8)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From K59 Other functional intestinal disorders applies to 14 codes
  • functional disorders of stomach (K31.-)
From Chapter 11 (K00-K95) Diseases of the digestive system applies to 863 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR DIG025
Other specified and unspecified gastrointestinal disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Neurogenic Bowel

    loss or absence of normal intestinal function due to nerve damage or birth defects. it is characterized by the inability to control the elimination of stool from the body.

Patient EducationClinical

Digestive Diseases

When you eat, your body breaks food down to a form it can use to build and nourish cells and provide energy. This process is called digestion.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert K59.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
564.81 Neurogenic bowel
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About K59.2Overview

What is the ICD-10 code for neurogenic bowel, not elsewhere classified?

The ICD-10-CM code for neurogenic bowel, not elsewhere classified is K59.2 (sometimes written as K592). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is K59.2 (Other functional intestinal disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report neurogenic bowel, not elsewhere classified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does K59.2 group to?

When neurogenic bowel, not elsewhere classified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 392, 391, with relative weights from 0.7645 to 1.2389 depending on complications. Higher weights mean higher Medicare reimbursement.

Is K59.2 a CC or MCC?

CMS lists K59.2 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 15 closely related codes in its exclusion list.

Can K59.2 be reported with R19.4?

Not as a rule. The Excludes1 note at K59, which applies to K59.2, lists "change in bowel habit NOS (R19.4)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).