2027 ICD-10-CM Diagnosis Code I82.812Embolism and thrombosis of superficial veins of left lower extremity
ICD-10-CM Codes›I00–I99›I80-I89›I82
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
I82.812 is a billable ICD-10-CM diagnosis code for embolism and thrombosis of superficial veins of left lower extremity. 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 acute thrombosis of superficial vein of left lower extremity. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Acute phlebitis; thrombophlebitis and thromboembolism.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute thrombosis of superficial vein of left lower extremity
- Acute thrombosis of superficial vein of lower limb
- Chronic thrombosis of superficial vein of left leg
- Chronic thrombosis of superficial vein of lower limb
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to I82.812: 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.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name I82.812, its category, or a range that includes it.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert I82.812 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I82.812Overview
What is the ICD-10 code for embolism and thrombosis of superficial veins of left lower extremity?
The ICD-10-CM code for embolism and thrombosis of superficial veins of left lower extremity is I82.812 (sometimes written as I82812). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is I82.812 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report embolism and thrombosis of superficial veins of left lower extremity on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does I82.812 group to?
When embolism and thrombosis of superficial veins of left lower extremity 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 I82.812 a CC or MCC?
CMS lists I82.812 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.
