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I82.463 ICD-10-CM Code: Acute embolism and thrombosis of calf muscular vein, bilateral

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 299 — PERIPHERAL VASCULAR DISORDERS WITH MCC (MDC 05)
  • MS-DRG 300 — PERIPHERAL VASCULAR DISORDERS WITH CC (MDC 05)
  • MS-DRG 301 — PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC (MDC 05)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Risk Adjustment (CMS-HCC)

Payment categories this diagnosis maps to under CMS-HCC V28, payment year 2026.

  • HCC 267 — Deep Vein Thrombosis and Pulmonary Embolism

Other models: CMS-HCC V22 HCC 108 · RxHCC V08 HCC 215

Risk scores depend on the enrollee's full accepted diagnosis set and segment; a category mapping alone does not determine payment.

Official Registry Overview & Definition

Acute embolism and thrombosis of calf muscular vein, bilateral is a billable ICD-10-CM diagnosis code (I82.463).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for I82.463 in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Code First

Underlying conditions that must be sequenced before this code.

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

Frequently Compared Codes

The official Excludes notes on I82.463 name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

  • FY2020 — 2019-10-01
    Added to the code set
    Acute embolism and thrombosis of calf muscular vein, bilateral
    FY2020 changes

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Relationships & Classification

Other codes that name I82.463 or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

1 Excludes1 notes: I80 (via I82.4.-).

2 Use Additional Code instructions: O22.3 (via I82.4.-), O87.1 (via I82.4.-).

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 3 MS-DRGs: DRG 299 (MDC 05), DRG 300 (MDC 05), DRG 301 (MDC 05).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):CIR033 — Acute phlebitis; thrombophlebitis and thromboembolism (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Related Codes

Same clinical process (MS-DRG)

CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

I82.441 — Acute embolism and thrombosis of right tibial vein, I82.442 — Acute embolism and thrombosis of left tibial vein, I82.443 — Acute embolism and thrombosis of tibial vein, bilateral, I82.449 — Acute embolism and thrombosis of unspecified tibial vein, I82.451 — Acute embolism and thrombosis of right peroneal vein, I82.452 — Acute embolism and thrombosis of left peroneal vein, I82.453 — Acute embolism and thrombosis of peroneal vein, bilateral, I82.459 — Acute embolism and thrombosis of unspecified peroneal vein, I82.461 — Acute embolism and thrombosis of right calf muscular vein, I82.462 — Acute embolism and thrombosis of left calf muscular vein, I82.469 — Acute embolism and thrombosis of unspecified calf muscular vein, I82.491 — Acute embolism and thrombosis of other specified deep vein of right lower extremity, I82.492 — Acute embolism and thrombosis of other specified deep vein of left lower extremity, I82.493 — Acute embolism and thrombosis of other specified deep vein of lower extremity, bilateral, I82.499 — Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity, I82.4Y1 — Acute embolism and thrombosis of unspecified deep veins of right proximal lower extremity, I82.4Y2 — Acute embolism and thrombosis of unspecified deep veins of left proximal lower extremity, I82.4Y3 — Acute embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral, I82.4Y9 — Acute embolism and thrombosis of unspecified deep veins of unspecified proximal lower extremity, I82.4Z1 — Acute embolism and thrombosis of unspecified deep veins of right distal lower extremity, +186 more

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Deep Vein Thrombosis and Pulmonary Embolism) for risk-adjusted payment.

I82.441 — Acute embolism and thrombosis of right tibial vein, I82.442 — Acute embolism and thrombosis of left tibial vein, I82.443 — Acute embolism and thrombosis of tibial vein, bilateral, I82.449 — Acute embolism and thrombosis of unspecified tibial vein, I82.451 — Acute embolism and thrombosis of right peroneal vein, I82.452 — Acute embolism and thrombosis of left peroneal vein, I82.453 — Acute embolism and thrombosis of peroneal vein, bilateral, I82.459 — Acute embolism and thrombosis of unspecified peroneal vein, I82.461 — Acute embolism and thrombosis of right calf muscular vein, I82.462 — Acute embolism and thrombosis of left calf muscular vein, I82.469 — Acute embolism and thrombosis of unspecified calf muscular vein, I82.491 — Acute embolism and thrombosis of other specified deep vein of right lower extremity, I82.492 — Acute embolism and thrombosis of other specified deep vein of left lower extremity, I82.493 — Acute embolism and thrombosis of other specified deep vein of lower extremity, bilateral, I82.499 — Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity, I82.4Y1 — Acute embolism and thrombosis of unspecified deep veins of right proximal lower extremity, I82.4Y2 — Acute embolism and thrombosis of unspecified deep veins of left proximal lower extremity, I82.4Y3 — Acute embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral, I82.4Y9 — Acute embolism and thrombosis of unspecified deep veins of unspecified proximal lower extremity, I82.4Z1 — Acute embolism and thrombosis of unspecified deep veins of right distal lower extremity, +146 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Acute phlebitis; thrombophlebitis and thromboembolism).

I82.441 — Acute embolism and thrombosis of right tibial vein, I82.442 — Acute embolism and thrombosis of left tibial vein, I82.443 — Acute embolism and thrombosis of tibial vein, bilateral, I82.449 — Acute embolism and thrombosis of unspecified tibial vein, I82.451 — Acute embolism and thrombosis of right peroneal vein, I82.452 — Acute embolism and thrombosis of left peroneal vein, I82.453 — Acute embolism and thrombosis of peroneal vein, bilateral, I82.459 — Acute embolism and thrombosis of unspecified peroneal vein, I82.461 — Acute embolism and thrombosis of right calf muscular vein, I82.462 — Acute embolism and thrombosis of left calf muscular vein, I82.469 — Acute embolism and thrombosis of unspecified calf muscular vein, I82.491 — Acute embolism and thrombosis of other specified deep vein of right lower extremity, I82.492 — Acute embolism and thrombosis of other specified deep vein of left lower extremity, I82.493 — Acute embolism and thrombosis of other specified deep vein of lower extremity, bilateral, I82.499 — Acute embolism and thrombosis of other specified deep vein of unspecified lower extremity, I82.4Y1 — Acute embolism and thrombosis of unspecified deep veins of right proximal lower extremity, I82.4Y2 — Acute embolism and thrombosis of unspecified deep veins of left proximal lower extremity, I82.4Y3 — Acute embolism and thrombosis of unspecified deep veins of proximal lower extremity, bilateral, I82.4Y9 — Acute embolism and thrombosis of unspecified deep veins of unspecified proximal lower extremity, I82.4Z1 — Acute embolism and thrombosis of unspecified deep veins of right distal lower extremity, +106 more

Lab tests where this diagnosis supports Medicare coverage

Medicare's National Coverage Determinations list this diagnosis as medical justification for these lab tests.

Gamma-glutamyl Transferase (GGT) Test, Partial Thromboplastin Time (PTT) Test, Prothrombin Time Test and INR (PT/INR)

Contextual Map

Every relationship of I82.463 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • I00-I99 — Chapter 9: Diseases of the Circulatory System (I00-I99) (I00-I99) [Hierarchy]
  • I80-I89 — Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified [Hierarchy]

Referenced by Excludes1 notes

  • I80 — Phlebitis and thrombophlebitis [Excludes1](via I82.4.-): “venous embolism and thrombosis of lower extremities (I82.4-, I82.5-, I82.81-)” · check together

Referenced by Use Additional Code instructions

  • O22.3 — Deep phlebothrombosis in pregnancy [Use Additional Code](via I82.4.-): “code to identify the deep vein thrombosis (I82.4-, I82.5-, I82.62-, I82.72-)” · check together
  • O87.1 — Deep phlebothrombosis in the puerperium [Use Additional Code](via I82.4.-): “code to identify the deep vein thrombosis (I82.4-, I82.5-, I82.62-, I82.72-)” · check together

Clinical classification (CCSR)

  • CIR033 — Acute phlebitis; thrombophlebitis and thromboembolism [CCSR]

Risk adjustment (CMS-HCC)

  • HCC 267 — Deep Vein Thrombosis and Pulmonary Embolism [CMS-HCC]

Potential MS-DRG

  • DRG 299 — PERIPHERAL VASCULAR DISORDERS WITH MCC [MS-DRG]: “PERIPHERAL VASCULAR DISORDERS WITH MCC (MDC 05)”
  • DRG 300 — PERIPHERAL VASCULAR DISORDERS WITH CC [MS-DRG]: “PERIPHERAL VASCULAR DISORDERS WITH CC (MDC 05)”
  • DRG 301 — PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC [MS-DRG]: “PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC (MDC 05)”

MDC crossing · procedures (17209)

  • MDC 05 — Diseases and Disorders of the Circulatory System [MDC crossing]: “Diseases and Disorders of the Circulatory System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • 00HE0MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Open Approach [Same-MDC procedure]: “Insertion of Neurostimulator Lead into Cranial Nerve, Open Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 00HE3MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Approach [Same-MDC procedure]: “Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 00HE4MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Endoscopic Approach [Same-MDC procedure]: “Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Endoscopic Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 015K0ZZ — Destruction of Head and Neck Sympathetic Nerve, Open Approach [Same-MDC procedure]: “Destruction of Head and Neck Sympathetic Nerve, Open Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • 015K3ZZ — Destruction of Head and Neck Sympathetic Nerve, Percutaneous Approach [Same-MDC procedure]: “Destruction of Head and Neck Sympathetic Nerve, Percutaneous Approach — grouped in MDC 05, the procedure side of this code's crossing.” · check together
  • and 17204 more

Nearest codes (40)

  • I82 — Other venous embolism and thrombosis [Sibling]
  • I82.423 — Acute embolism and thrombosis of iliac vein, bilateral [Sibling]
  • I82.429 — Acute embolism and thrombosis of unspecified iliac vein [Sibling]
  • I82.43 — Acute embolism and thrombosis of popliteal vein [Sibling]
  • I82.431 — Acute embolism and thrombosis of right popliteal vein [Sibling]
  • I82.432 — Acute embolism and thrombosis of left popliteal vein [Sibling]
  • I82.433 — Acute embolism and thrombosis of popliteal vein, bilateral [Sibling]
  • I82.439 — Acute embolism and thrombosis of unspecified popliteal vein [Sibling]
  • and 32 more

Change history

  • FY2020 — Added to the code set [Change history]

Nearest Codes in This Family

Official ICD-10-CM classifications closest to I82.463 in its code family, with their registry titles.

  • I82.453 — Acute embolism and thrombosis of peroneal vein, bilateral
  • I82.459 — Acute embolism and thrombosis of unspecified peroneal vein
  • I82.46 — Acute embolism and thrombosis of calf muscular vein
  • I82.461 — Acute embolism and thrombosis of right calf muscular vein
  • I82.462 — Acute embolism and thrombosis of left calf muscular vein
  • I82.469 — Acute embolism and thrombosis of unspecified calf muscular vein
  • I82.49 — Acute embolism and thrombosis of other specified deep vein of lower extremity
  • I82.491 — Acute embolism and thrombosis of other specified deep vein of right lower extremity
  • I82.492 — Acute embolism and thrombosis of other specified deep vein of left lower extremity
  • I82.493 — Acute embolism and thrombosis of other specified deep vein of lower extremity, bilateral

View all codes in the I82 family