2017/18 ICD-10-CM Diagnosis Code I79.0

Aneurysm of aorta in diseases classified elsewhere

ICD-10-CM Coding Rules
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, 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 principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying disease
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as I79.0. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • syphilitic aneurysm (
    ICD-10-CM Diagnosis Code A52.01

    Syphilitic aneurysm of aorta

      2016 2017 2018 Billable/Specific Code
    A52.01
    )
The following code(s) above I79.0 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to I79.0:
  • I00-I99
    2018 ICD-10-CM Range I00-I99

    Diseases of the circulatory system

    Type 2 Excludes
    • 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.-)
    Diseases of the circulatory system
ICD-10-CM I79.0 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert I79.0 to ICD-9-CM

Code History
ICD-10-CM Codes Adjacent To I79.0
I77.812 Thoracoabdominal aortic ectasia
I77.819 …… unspecified site
I77.89 Other specified disorders of arteries and arterioles
I77.9 Disorder of arteries and arterioles, unspecified
I78 Diseases of capillaries
I78.0 Hereditary hemorrhagic telangiectasia
I78.1 Nevus, non-neoplastic
I78.8 Other diseases of capillaries
I78.9 Disease of capillaries, unspecified
I79 Disorders of arteries, arterioles and capillaries in diseases classified elsewhere
I79.0 Aneurysm of aorta in diseases classified elsewhere
I79.1 Aortitis in diseases classified elsewhere
I79.8 Other disorders of arteries, arterioles and capillaries in diseases classified elsewhere
I80 Phlebitis and thrombophlebitis
I80.0 Phlebitis and thrombophlebitis of superficial vessels of lower extremities
I80.00 Phlebitis and thrombophlebitis of superficial vessels of unspecified lower extremity
I80.01 Phlebitis and thrombophlebitis of superficial vessels of right lower extremity
I80.02 Phlebitis and thrombophlebitis of superficial vessels of left lower extremity
I80.03 …… bilateral
I80.1 Phlebitis and thrombophlebitis of femoral vein
I80.10 Phlebitis and thrombophlebitis of unspecified femoral vein

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.