2027 ICD-10-CM Diagnosis Code F98.1Encopresis not due to a substance or known physiological condition

ICD-10-CM Codes›F01–F99›F90-F98›F98

ICD-10-CM F98.1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

F98.1 is a billable ICD-10-CM diagnosis code for encopresis not due to a substance or known physiological condition. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 886. Coders also document this condition as encopresis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Urinary incontinence.

Code Identity

ICD-10-CM Code
F98.1
Billable Status
Yes — Valid for Submission
Code Describes
Encopresis not due to a substance or known physiological condition
Short Description
Encopresis not due to a substance or known physiol condition
Parent Code
F98
Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence

Code Classification

ChapterF01–F99Mental and behavioural disorders
SectionF90-F98Behavioral and emotional disorders with onset usually occurring in childhood and adolescence
CategoryF98Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence
This CodeF98.1Encopresis not due to a substance or known physiological condition

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Encopresis
  • Encopresis without constipation AND without overflow incontinence
  • Functional encopresis
  • Non-organic continuous encopresis
  • Non-organic discontinuous encopresis
  • Primary functional encopresis
  • Secondary functional encopresis

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to F98.1: its own notes plus those printed at F98, block F90-F98, and Chapter 5. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • disorders of psychological development

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Functional encopresis
  • Incontinence of feces of nonorganic origin
  • Psychogenic encopresis

Excludes1

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

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 F98 Other behavioral and emotional disorders with onset usually occurring in childhood and adolescence applies to 9 codes
  • breath-holding spells (R06.89)
  • gender identity disorder of childhood (F64.2)
  • Kleine-Levin syndrome (G47.13)
  • obsessive-compulsive disorder (F42.-)
  • sleep disorders not due to a substance or known physiological condition (F51.-)
From Chapter 5 (F01-F99) Mental and behavioural disorders applies to 872 codes
  • symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

  • code to identify the cause of any coexisting constipation.

Notes

General instructions on how these codes are used.

From Block F90-F98 Behavioral and emotional disorders with onset usually occurring in childhood and adolescence applies to 33 codes
  • Codes within categories F90-F98 may be used regardless of the age of a patient. These disorders generally have onset within the childhood or adolescent years, but may continue throughout life or not be diagnosed until adulthood

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name F98.1, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming F98.1: they are not reported together with it, unless the two conditions are unrelated.

  • R15 Fecal incontinence
    fecal incontinence of nonorganic origin (F98.1)

Notes 1

These notes mention F98.1.

  • Block F90-F98 Behavioral and emotional disorders with onset usually occurring in childhood and adolescence
    Codes within categories F90-F98 may be used regardless of the age of a patient. These disorders generally have onset within the childhood or adolescent years, but may continue throughout life or not be diagnosed until adulthood names F90-F98, which includes this code

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 GEN008
Urinary incontinence
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Bowel Incontinence

Bowel incontinence is the inability to control your bowels. When you feel the urge to have a bowel movement, you may not be able to hold it until you get to a toilet. Millions of Americans have this problem. It affects people of all ages - children and adults. It is more common in women and older adults. It is not a normal part of aging.

Read the full article at MedlinePlus

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

Convert F98.1 to ICD-9-CMHistory

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

ICD-9-CM
307.7 Encopresis
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 F98.1Overview

What is the ICD-10 code for encopresis not due to a substance or known physiological condition?

The ICD-10-CM code for encopresis not due to a substance or known physiological condition is F98.1 (sometimes written as F981). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is F98.1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encopresis not due to a substance or known physiological condition on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does F98.1 group to?

When encopresis not due to a substance or known physiological condition is the principal diagnosis on an inpatient stay, it groups to MS-DRG 886 (behavioral and Developmental Disorders), which carries a relative weight of 1.6455. Higher weights mean higher Medicare reimbursement.

Can F98.1 be reported with a code from R15?

Not as a rule. The Excludes1 note on F98.1 lists "encopresis NOS (R15.-)". 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).

Does F98.1 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: code to identify the cause of any coexisting constipation.. The additional code is reported after F98.1.