2027 ICD-10-CM Diagnosis Code K83.9Disease of biliary tract, unspecified
ICD-10-CM Codes›K00–K95›K80-K87›K83
- Billable — Valid for Submission
- Not Chronic
K83.9 is a billable ICD-10-CM diagnosis code for disease of biliary tract, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 444 through 446. Coders also document this condition as disorder of anastomosis of biliary tract. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Biliary tract disease.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Disorder of anastomosis of biliary tract
- Disorder of bile duct
- Disorder of biliary tract
- Disorder of liver and/or biliary tract
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to K83.9: its own notes plus those printed at K83 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.
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)
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.
Disease, diseased See Also: Syndrome;
biliary (tract) K83.9
hepatobiliary K83.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Bile Duct Diseases
Your liver makes a digestive juice called bile. Your gallbladder stores it between meals. When you eat, your gallbladder pushes the bile into tubes called bile ducts. They carry the bile to your small intestine. The bile helps break down fat. It also helps the liver get rid of toxins and wastes.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert K83.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About K83.9Overview
What is the ICD-10 code for disease of biliary tract, unspecified?
The ICD-10-CM code for disease of biliary tract, unspecified is K83.9 (sometimes written as K839). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is K83.9 (Other diseases of biliary tract) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report disease of biliary tract, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does K83.9 group to?
When disease of biliary tract, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 444, 445, 446, with relative weights from 0.8121 to 1.6662 depending on complications. Higher weights mean higher Medicare reimbursement.
Can K83.9 be reported with K91.5?
Not as a rule. The Excludes1 note at K83, which applies to K83.9, lists "postcholecystectomy syndrome (K91.5)". 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 K83.9?
Under the General Equivalence Mappings, disease of biliary tract, unspecified converts to ICD-9-CM 576.9 (dis of biliary tract NOS). The mapping is a direct match.
