2027 ICD-10-CM Diagnosis Code K71.11Toxic liver disease with hepatic necrosis, with coma

ICD-10-CM Codes›K00–K95›K70-K77›K71

ICD-10-CM K71.11
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

K71.11 is a billable ICD-10-CM diagnosis code for toxic liver disease with hepatic necrosis, with coma. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 441 through 443, 791, 793. As a secondary diagnosis, it counts as a major complication or comorbidity (MCC) and places an inpatient stay in the highest severity level of its MS-DRG family. It does not count, however, when the principal diagnosis is one of 6 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Coma; stupor; and brain damage, Drug induced or toxic related condition, and Other specified and unspecified liver disease.

K71.11 no longer risk-adjusts for Medicare Advantage: it mapped to HCC 27 under the retired CMS-HCC V24 model through payment year 2025 but maps to no category in the live V28 model. It still risk-adjusts in the PACE (CMS-HCC V22) category 27, ESRD (V21) category 27, and ESRD (V24) category 27 for payment year 2027.

Code Identity

ICD-10-CM Code
K71.11
Billable Status
Yes — Valid for Submission
Code Describes
Toxic liver disease with hepatic necrosis, with coma
Short Description
Toxic liver disease with hepatic necrosis, with coma
Same as the full description in the CMS dataset.
Parent Code
K71.1
Toxic liver disease with hepatic necrosis

Code Classification

ChapterK00–K95Diseases of the digestive system
SectionK70-K77Diseases of liver
CategoryK71Toxic liver disease
This CodeK71.11Toxic liver disease with hepatic necrosis, with coma

Medicare Risk Adjustment (HCC)Billing

K71.11 no longer risk-adjusts for Medicare Advantage: it maps to no payment category in the live CMS-HCC V28 model, although it still risk-adjusts in the other CMS models shown below.

CMS-HCC V28 (Medicare Advantage Payment Model)
Not mapped
Dropped in V28 see all codes that no longer risk-adjust
Prior Model (CMS-HCC V24)
HCC 27
V24 retired last contributed to a Medicare Advantage risk score in payment year 2025
Other CMS Models
PACE (CMS-HCC V22): HCC 27 · ESRD (V21): HCC 27 · ESRD (V24): HCC 27
ESRD V21 weights: 0.204 dialysis, 0.863–1.028 functioning graft · ESRD V24 weights: 0.196 dialysis, 0.764–1.149 functioning graft
Part D (RxHCC)
Not mapped
K71.11 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.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to K71.11: its own notes plus those printed at K71, block K70-K77, and Chapter 11. 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 K71 Toxic liver disease applies to 12 codes
  • drug-induced idiosyncratic (unpredictable) liver disease
  • drug-induced toxic (predictable) liver disease

Excludes1

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

From Block K70-K77 Diseases of liver applies to 65 codes
  • jaundice NOS (R17)

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 K71 Toxic liver disease applies to 12 codes
  • alcoholic liver disease (K70.-)
  • Budd-Chiari syndrome (I82.0)
From Block K70-K77 Diseases of liver applies to 65 codes
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)

Code First

The underlying condition named in the note is sequenced before this code.

From K71 Toxic liver disease applies to 12 codes
  • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

Use Additional Code

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

From K71 Toxic liver disease applies to 12 codes
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

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

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name K71.11, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming K71.11: they are not reported together with it, unless the two conditions are unrelated.

  • K72 Hepatic failure, not elsewhere classified
    hepatic failure with toxic liver disease (K71.1-) names K71.1-, which includes this code
  • K73 Chronic hepatitis, not elsewhere classified
    drug-induced hepatitis (chronic) (K71.-) names K71.-, which includes this code

Excludes2 2

These codes carry an Excludes2 note naming K71.11: its condition is not part of those codes, and both may be reported when the patient has both.

  • K75 Other inflammatory liver diseases
    toxic liver disease (K71.-) names K71.-, which includes this code
  • K76 Other diseases of liver
    toxic liver disease (K71.-) names K71.-, 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 NVS013
Coma; stupor; and brain damage
Default principal diagnosis: inpatient No · outpatient No
CCSR INJ030
Drug induced or toxic related condition
Default principal diagnosis: inpatient No · outpatient No
CCSR DIG019
Other specified and unspecified liver disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Coma

A coma is a deep state of unconsciousness. An individual in a coma is alive but unable to move or respond to his or her environment. Coma may occur as a complication of an underlying illness, or as a result of injuries, such as brain injury.

Read the full article at MedlinePlus

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

Convert K71.11 to ICD-9-CMHistory

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

ICD-9-CM
573.3 Hepatitis NOS
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
572.2 Hepatic encephalopathy
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

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 K71.11Overview

What is the ICD-10 code for toxic liver disease with hepatic necrosis, with coma?

The ICD-10-CM code for toxic liver disease with hepatic necrosis, with coma is K71.11 (sometimes written as K7111). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is K71.11 (Toxic liver disease with hepatic necrosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report toxic liver disease with hepatic necrosis, with coma on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does K71.11 group to?

When toxic liver disease with hepatic necrosis, with coma is the principal diagnosis on an inpatient stay, it groups to MS-DRG 793, 791, 442, 441, 443, with relative weights from 0.6890 to 4.2192 depending on complications. Higher weights mean higher Medicare reimbursement.

Is K71.11 a CC or MCC?

CMS lists K71.11 as an MCC (major complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it places the inpatient stay in the highest-weighted DRG of its severity family. It does not count when the principal diagnosis is one of the 6 closely related codes in its exclusion list.

Can K71.11 be reported with R17?

Not as a rule. The Excludes1 note at block K70-K77, which applies to K71.11, lists "jaundice NOS (R17)". 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 K71.11 risk-adjust for Medicare Advantage payment?

Not for Medicare Advantage. K71.11 mapped to HCC 27 in the retired CMS-HCC V24 model, which last determined payment in 2025, but it maps to no category in the live V28 model; see all codes that no longer risk-adjust. It still risk-adjusts in the PACE (CMS-HCC V22) category 27 (End-Stage Liver Disease), ESRD (V21) category 27 (End-Stage Liver Disease), and ESRD (V24) category 27 (End-Stage Liver Disease).