Version 2024

2024 ICD-10-CM Diagnosis Code I71.019

Dissection of thoracic aorta, unspecified

ICD-10-CM Code:: I71.019
ICD-10 Code for:: Dissection of thoracic aorta, unspecified
Is Billable?: Yes - Valid for Submission
Chronic Condition Indicator: ^[1]: Chronic
Code Navigator:

Code Information
Approximate Synonyms
Clinical Classification
Tabular List of Diseases and Injuries
Index to Diseases and Injuries References
Diagnostic Related Groups Mapping
Replacement Code
Patient Education
Other Codes Used Similar Conditions
Code History

Code Classification

Diseases of the circulatory system
(I00–I99)
- Diseases of arteries, arterioles and capillaries
  (I70-I79)
  - Aortic aneurysm and dissection
    (I71)

I71.019 is a billable diagnosis code used to specify a medical diagnosis of dissection of thoracic aorta, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Unspecified diagnosis codes like I71.019 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Chronic dissection of thoracic aorta
Chronic nontraumatic dissection of thoracic aorta
Congenital dilatation of aorta
Dissection of thoracic aorta
Familial thoracic aortic aneurysm and aortic dissection
Intramural hematoma of aorta
Intramural hematoma of thoracic aorta
Nontraumatic dissection of thoracic aorta

Clinical Classification

Clinical Category is Arterial dissections
CCSR Category Code: CIR027
Inpatient Default CCSR: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.
Outpatient Default CCSR: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

- Dissection
- - aorta - I71.00
  - - thoracic - I71.019

- Hematoma (traumatic) (skin surface intact) - See Also: Contusion;
- - aorta, dissecting - I71.00
  - - thoracic - See Also: Dissection, aorta, thoracic; - I71.019

I71.019 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG	MS-DRG Title	MCD	Relative Weight
299	PERIPHERAL VASCULAR DISORDERS WITH MCC	05	1.5762
300	PERIPHERAL VASCULAR DISORDERS WITH CC	05	1.067
301	PERIPHERAL VASCULAR DISORDERS WITHOUT CC/MCC	05	0.7098

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Replacement Code

I71019 replaces the following previously assigned ICD-10-CM code(s):

I71.01 - Dissection of thoracic aorta

Code History

FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
FY 2023 - Code Added, effective from 10/1/2022 through 9/30/2023

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
The condition places limitations on self-care, independent living, and social interactions.