I51.8
Non-billableOther ill-defined heart diseases
Other ill-defined heart diseases
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- any condition in I51.4-I51.9 due to hypertension (I11.-)
- any condition in I51.4-I51.9 due to hypertension and chronic kidney disease (I13.-)
- heart disease specified as rheumatic (I00-I09)
Excludes 2
Conditions not included here, but the patient may have both
- 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.-)
Child Codes (2)
Also Known As / Clinical Terms
Frequently Asked Questions
What is the ICD-10 code for other ill-defined heart diseases?
The ICD-10-CM code for other ill-defined heart diseases is I51.8. The full clinical description is "Other ill-defined heart diseases". I51.8 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code I51.8 mean?
ICD-10-CM code I51.8 represents "Other ill-defined heart diseases". It is classified under Chapter 9: Diseases of the Circulatory System and is a non-billable header code. Use a more specific child code for billing purposes.
Is I51.8 a billable code?
No, I51.8 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under I51.8.
What chapter is I51.8 in?
I51.8 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I51.8?
I51.8 has Excludes1 notes indicating codes that cannot be used together with it, including: any condition in I51.4-I51.9 due to hypertension (I11.-); any condition in I51.4-I51.9 due to hypertension and chronic kidney disease (I13.-); heart disease specified as rheumatic (I00-I09).
What are the subcategories under I51.8?
I51.8 has 2 child codes, including: I51.81 (Takotsubo syndrome), I51.89 (Other ill-defined heart diseases).
What are the UMLS CUIs for I51.8?
I51.8 is linked to 1 UMLS Concept Unique Identifier: C0155717. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.