I00-I99 ICD 10 Codes interval for

Diseases of the circulatory system

ICD 10 Codes related to Diseases of the circulatory system

The circulatory system consists of the heart, lungs, arteries, capillaries and veins.

Codes ICD 10 CM Code description
I00-I02 Acute rheumatic fever
I05-I09 Chronic rheumatic heart diseases
I10-I16 Hypertensive diseases
I20-I25 Ischemic heart diseases
I26-I28 Pulmonary heart disease and diseases of pulmonary circulation
I30-I52 Other forms of heart disease
I60-I69 Cerebrovascular diseases
I70-I79 Diseases of arteries, arterioles and capillaries
I80-I89 Diseases of veins, lymphatic vessels and lymph nodes, not elsewhere classified
I95-I99 Other and unspecified disorders of the circulatory system

Back to ICD 10 CM Codes

The circulatory system consists of the heart, lungs, arteries, capillaries and veins. Various problems can affect the circulatory system, but heart disease is a main one. Common circulatory system diseases: Coronary artery disease, Atherosclerosis, Arteriosclerosis, and Arteriolosclerosis, Stroke, Hypertension, Heart failure, Aortic dissection and aneurysm, Myocarditis and pericarditis, Cardiomyopathy.

Key updates

An inside look into each interval of the ICD-10-CM code set

  • A new category has been added for coding a subsequent acute MI, which is an MI that occurs within 28 days of a previous acute MI.
  • The time frame for assigning the acute MI code is 28 days in ICD-10-CM.
  • Terminology used to describe several cardiovascular conditions has been revised to reflect more current medical practice.
  • A major change is the classification of hypertension, which in ICD-9-CM was classified by type:
    – Benign, Malignant or Unspecified.
  • That classification is not required in ICD-10-CM because there is only one code for hypertension in ICD-10; the code is I10 - Essential (Primary) Hypertension.

Instructional Notations

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Includes:

The word 'Includes' appears immediately under certain categories to further define, or give examples of, the content of the category.

Excludes Notes:

The ICD-10-CM has two types of excludes notes. Each note has a different definition for use but they are both similar in that they indicate that codes excluded from each other are independent of each other.

Excludes Notes:

The ICD-10-CM has two types of excludes notes. Each note has a different definition for use but they are both similar in that they indicate that codes excluded from each other are independent of each other.

Excludes1:

A type 1 Excludes note is a pure excludes. It means 'NOT CODED HERE!' An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Excludes2:

A type 2 excludes note represents 'Not included here'. An excludes2 note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When an Excludes2 note appears under a code it is acceptable to use both the code and the excluded code together.


Codes notes instructions

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Code First/Use Additional Code notes (etiology/manifestation paired codes)

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a 'use additional code' note at the etiology code, and a 'code first' note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

In most cases the manifestation codes will have in the code title, 'in diseases classified elsewhere.' Codes with this title are a component of the etiology/ manifestation convention. The code title indicates that it is a manifestation code. 'In diseases classified elsewhere' codes are never permitted to be used as first listed or principal diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.

Code Also

A code also note instructs that 2 codes may be required to fully describe a condition but the sequencing of the two codes is discretionary, depending on the severity of the conditions and the reason for the encounter.

7th characters and placeholder X

For codes less than 6 characters that require a 7th character a placeholder X should be assigned for all characters less than 6. The 7th character must always be the 7th character of a code