2027 ICD-10-CM Diagnosis Code K76.6Portal hypertension
ICD-10-CM Codes›K00–K95›K70-K77›K76
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 63
- Chronic Condition
K76.6 is a billable ICD-10-CM diagnosis code for portal hypertension. 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. 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 6 closely related codes. Coders also document this condition as associated pulmonary arterial hypertension. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified liver disease.
For Medicare Advantage risk adjustment, K76.6 maps to CMS-HCC Category 63 (Chronic Liver Failure/End-Stage Liver Disorders) under the V28 model, adding a risk factor of about 0.962 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
K76.6 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.
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.
- Associated pulmonary arterial hypertension
- Idiopathic portal hypertension
- Portal hypertension
- Portal hypertension caused by antiretroviral drug
- Portal hypertension due to cystic fibrosis
- Pulmonary arterial hypertension associated with portal hypertension
- Secondary portal hypertension
- Venous hypertension
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to K76.6: its own notes plus those printed at K76, block K70-K77, 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.
- 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.
- 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)
Use Additional Code
Add a second code, after this one, to fully describe the condition.
- code for any associated complications, such as:
- portal hypertensive gastropathy (K31.89)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name K76.6, its category, or a range that includes it.
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.
Clinical InformationClinical
Hypertension, Portal
abnormal increase of resistance to blood flow within the hepatic portal system, frequently seen in liver cirrhosis and conditions with obstruction of the portal vein.
Patient EducationClinical
High Blood Pressure
Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls.
The full article covers:
- What is blood pressure?
- How is high blood pressure diagnosed?
- What are the different types of high blood pressure?
- Why do I need to worry about high blood pressure?
- What are the treatments for high blood pressure?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K76.6 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K76.6Overview
What is the ICD-10 code for portal hypertension?
The ICD-10-CM code for portal hypertension is K76.6 (sometimes written as K766). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is K76.6 (Other diseases of liver) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report portal hypertension on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does K76.6 group to?
When portal hypertension is the principal diagnosis on an inpatient stay, it groups to MS-DRG 442, 441, 443, with relative weights from 0.6890 to 1.8226 depending on complications. Higher weights mean higher Medicare reimbursement.
Is K76.6 a CC or MCC?
CMS lists K76.6 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 6 closely related codes in its exclusion list.
Can K76.6 be reported with R17?
Not as a rule. The Excludes1 note at block K70-K77, which applies to K76.6, 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).
What HCC is K76.6?
K76.6 (portal hypertension) maps to CMS-HCC Category 63 (Chronic Liver Failure/End-Stage Liver Disorders), commonly written as HCC 63, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. It mapped to HCC 27 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 K76.6 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, K76.6 adds a risk adjustment factor of about 0.962 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.861 to 1.209 depending on the payment segment). A more severe related category (HCC 62) supersedes it when both are reported. See the full factor table on the HCC 63 category page.
