2027 ICD-10-CM Diagnosis Code I82.891Chronic embolism and thrombosis of other specified veins
ICD-10-CM Codes›I00–I99›I80-I89›I82
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Chronic Condition
I82.891 is a billable ICD-10-CM diagnosis code for chronic embolism and thrombosis of other specified veins. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 299 through 301. 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 201 closely related codes. Coders also document this condition as chronic deep vein thrombosis of pelvic vein. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Chronic phlebitis; thrombophlebitis and thromboembolism.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Chronic deep vein thrombosis of pelvic vein
- Chronic thrombosis of splenic vein
- Splenic vein thrombosis
- Visceral venous thrombosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I82.891: its own notes plus those printed at I82.8, I82, and Chapter 9. A note printed at a category, block or chapter applies to every code under it.
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)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Code First
The underlying condition named in the note is sequenced before this code.
Use Additional Code
Add a second code, after this one, to fully describe the condition.
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.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert I82.891 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I82.891Overview
What is the ICD-10 code for chronic embolism and thrombosis of other specified veins?
The ICD-10-CM code for chronic embolism and thrombosis of other specified veins is I82.891 (sometimes written as I82891). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I82.891 (Embolism and thrombosis of other specified veins) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chronic embolism and thrombosis of other specified veins on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I82.891 group to?
When chronic embolism and thrombosis of other specified veins is the principal diagnosis on an inpatient stay, it groups to MS-DRG 301, 300, 299, with relative weights from 0.7132 to 1.5840 depending on complications. Higher weights mean higher Medicare reimbursement.
Is I82.891 a CC or MCC?
CMS lists I82.891 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 201 closely related codes in its exclusion list.
