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ICD-10-CM 2027 diagnosis code

I82.463Acute embolism and thrombosis of calf muscular vein, bilateral

✓ Billable / specific

I82.463 is a valid, billable ICD-10-CM code for acute embolism and thrombosis of calf muscular vein, bilateral. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Acute embolism and thombos of calf muscular vein, bilateral

Code last changed in FY2020 (effective October 1, 2019). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I82.463

I82.463 is the ICD-10-CM diagnosis code for acute embolism and thrombosis of calf muscular vein, bilateral. It belongs to category I82 (other venous embolism and thrombosis), block I80-I89 (diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified) and chapter 9 (diseases of the circulatory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within I82.46 (acute embolism and thrombosis of calf muscular vein), I82.463 is specifically for acute embolism and thrombosis of calf muscular vein, bilateral. Related codes cover right calf muscular vein (I82.461), left calf muscular vein (I82.462) and unspecified calf muscular vein (I82.469).

Code first venous embolism and thrombosis complicating: abortion, ectopic or molar pregnancy (O00-O07, O08.7) and pregnancy, childbirth and the puerperium (O22.-, O87.-).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 299 (Peripheral Vascular Disorders with MCC, relative weight 1.5842), DRG 300 (Peripheral Vascular Disorders with CC, relative weight 1.0464) and DRG 301 (Peripheral Vascular Disorders without CC/MCC, relative weight 0.7133), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It was added in FY2020, effective October 1, 2019.

Notes that apply from higher levels

Instructions written at a parent level also apply to I82.463.

› From I82 Other venous embolism and thrombosis
Excludes2
  • venous embolism and thrombosis (of):
  • cerebral (I63.6, I67.6)
  • coronary (I21-I25)
  • intracranial and intraspinal, septic or NOS (G08)
  • intracranial, nonpyogenic (I67.6)
  • intraspinal, nonpyogenic (G95.1)
  • mesenteric (K55.0-)
  • portal (I81)
  • pulmonary (I26.-)
Code first
  • venous embolism and thrombosis complicating:
  • abortion, ectopic or molar pregnancy (O00-O07, O08.7)
  • pregnancy, childbirth and the puerperium (O22.-, O87.-)

Broader instructions also apply from Chapter 9: Diseases of the circulatory system.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2020 (effective 10/1/2019): Added
  • No changes since FY2020.

Common questions about I82.463

Is I82.463 billable?

Yes. I82.463 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can I82.463 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict I82.463 as a principal diagnosis.

Is I82.463 a CC or MCC?

No. I82.463 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does I82.463 group to?

I82.463 is used in the MS-DRG v44.0 logic for MS-DRG 299 (Peripheral Vascular Disorders with MCC), MS-DRG 300 (Peripheral Vascular Disorders with CC) and MS-DRG 301 (Peripheral Vascular Disorders without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.