2027 ICD-10-CM Diagnosis Code K56.41Fecal impaction

ICD-10-CM Codes›K00–K95›K55-K64›K56

ICD-10-CM K56.41
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K56.41 is a billable ICD-10-CM diagnosis code for fecal impaction. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 388 through 390, 791, 793. Coders also document this condition as bolus obstruction of intestine. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Intestinal obstruction and ileus.

For Medicare Advantage risk adjustment, K56.41 maps to CMS-HCC Category 78 (Intestinal Obstruction/Perforation) under the V28 model, adding a risk factor of about 0.326 for a community, non-dual, aged beneficiary in payment year 2027.

Code Identity

ICD-10-CM Code
K56.41
Billable Status
Yes — Valid for Submission
Code Describes
Fecal impaction
Short Description
Fecal impaction
Same as the full description in the CMS dataset.
Parent Code
K56.4
Other impaction of intestine

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK55-K64Other diseases of intestines
CategoryK56Paralytic ileus and intestinal obstruction without hernia
This CodeK56.41Fecal impaction

Medicare Risk Adjustment (HCC)Billing

K56.41 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.

CMS-HCC V28 Category (Payment Model)
HCC 78— Intestinal Obstruction/Perforation
Payment HCC · PY 2027 one of 76 ICD-10-CM codes in this category
Risk Adjustment Factor (RAF) Weight
+0.326
community, non-dual, aged · ranges 0.326–0.688 across segments
Hierarchy
Superseded by HCC 77
a more severe related category takes the payment when both are reported
Prior Model (CMS-HCC V24)
HCC 33
V24 retired V28 pays 100% of MA risk scores since PY 2026
Other CMS Models
PACE (CMS-HCC V22): HCC 33 · ESRD (V21): HCC 33 · ESRD (V24): HCC 33
ESRD V21 weights: 0.072 dialysis, 0.285–0.346 functioning graft · ESRD V24 weights: 0.078 dialysis, 0.250–0.474 functioning graft
Part D (RxHCC)
Not mapped
K56.41 does not risk-adjust in the RxHCC prescription drug model

Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bolus obstruction of intestine
  • Fecal impaction
  • Fecal impaction of colon
  • Fecal impaction of rectum
  • Impaction of colon
  • Impaction of intestine
  • Impaction of large intestine
  • Inspissated stool syndrome

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K56.41: its own notes plus those printed at K56 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 K56 Paralytic ileus and intestinal obstruction without hernia applies to 16 codes
  • congenital stricture or stenosis of intestine (Q41-Q42)
  • cystic fibrosis with meconium ileus (E84.11)
  • ischemic stricture of intestine (K55.1)
  • meconium ileus NOS (P76.0)
  • neonatal intestinal obstructions classifiable to P76.-
  • obstruction of duodenum (K31.5)
  • postprocedural intestinal obstruction (K91.3-)

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.

On K56.41 itself
  • incomplete defecation (R15.0)
From K56 Paralytic ileus and intestinal obstruction without hernia applies to 16 codes
  • stenosis of anus or rectum (K62.4)
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.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K56.41, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming K56.41: they are not reported together with it, unless the two conditions are unrelated.

  • K59.0 Constipation
    fecal impaction (K56.41)
  • P76.8 Other specified intestinal obstruction of newborn
    intestinal obstruction classifiable to K56.- names K56.-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming K56.41: its condition is not part of those codes, and both may be reported when the patient has both.

  • R15.0 Incomplete defecation
    fecal impaction (K56.41)
  • Block R10-R19 Symptoms and signs involving the digestive system and abdomen
    intestinal obstruction (K56.-) names K56.-, which includes this code

Use Additional Code 1

These codes say to use an additional code from the note, and K56.41 is one of the codes named.

  • G90.4 Autonomic dysreflexia
    fecal impaction (K56.41)

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 DIG012
Intestinal obstruction and ileus
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Fecal Impaction

    formation of a firm impassable mass of stool in the rectum or distal colon.

Patient EducationClinical

Intestinal Obstruction

An intestinal obstruction occurs when food or stool cannot move through the intestines. The obstruction can be complete or partial. There are many causes. The most common are adhesions, hernias, cancers, and certain medicines.

Read the full article at MedlinePlus

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

Convert K56.41 to ICD-9-CMHistory

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

ICD-9-CM
560.32 Fecal impaction
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 K56.41Overview

What is the ICD-10 code for fecal impaction?

The ICD-10-CM code for fecal impaction is K56.41 (sometimes written as K5641). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is K56.41 (Other impaction of intestine) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report fecal impaction on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does K56.41 group to?

When fecal impaction is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 389, 388, 390, with relative weights from 0.5403 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.

Can K56.41 be reported with E84.11?

Not as a rule. The Excludes1 note at K56, which applies to K56.41, lists "cystic fibrosis with meconium ileus (E84.11)". 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).

What is the ICD-9 equivalent of K56.41?

Under the General Equivalence Mappings, fecal impaction converts to ICD-9-CM 560.32 (fecal impaction). The mapping is a direct match.

What HCC is K56.41?

K56.41 (fecal impaction) maps to CMS-HCC Category 78 (Intestinal Obstruction/Perforation), commonly written as HCC 78, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 33 under the retired V24 model. It also maps in the PACE (CMS-HCC V22), ESRD (V21), and ESRD (V24) models. It does not map to any RxHCC in the Part D prescription drug model.

Does K56.41 risk-adjust for Medicare Advantage payment?

Yes. When documented and reported on a Medicare Advantage encounter, K56.41 adds a risk adjustment factor of about 0.326 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.326 to 0.688 depending on the payment segment). A more severe related category (HCC 77) supersedes it when both are reported. See the full factor table on the HCC 78 category page.