I50.21
BillableAcute systolic (congestive) heart failure
Acute systolic (congestive) heart failure
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- combined systolic (congestive) and diastolic (congestive) heart failure (I50.4-)
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.-)
- cardiac arrest (I46.-)
- neonatal cardiac failure (P29.0)
Code First
The underlying condition must be sequenced before this code
- heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)
- heart failure due to hypertension (I11.0)
- heart failure due to hypertension with chronic kidney disease (I13.-)
- heart failure following surgery (I97.13-)
- obstetric surgery and procedures (O75.4)
- rheumatic heart failure (I09.81)
Code Also
A second code may be required; sequencing depends on circumstances
- end stage heart failure, if applicable (I50.84)
Also Known As / Clinical Terms
SNOMED CT
- Decreased cardiac function43650005
- Acute systolic heart failure443254009
- HFrEF - heart failure with reduced ejection fraction703272007
- Heart failure with reduced ejection fraction703272007
- Decreased cardiac ejection fraction435861000124109
- Reduced ejection fraction co-occurrent and due to acute heart failure7391000175102
Frequently Asked Questions
What is the ICD-10 code for acute systolic (congestive) heart failure?
The ICD-10-CM code for acute systolic (congestive) heart failure is I50.21. The full clinical description is "Acute systolic (congestive) heart failure". I50.21 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I50.21 mean?
ICD-10-CM code I50.21 represents "Acute systolic (congestive) heart failure". It is classified under Chapter 9: Diseases of the Circulatory System and is a billable/specific code that can be used on a claim.
Is I50.21 a billable code?
Yes, I50.21 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I50.21 in?
I50.21 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What codes cannot be used with I50.21?
I50.21 has Excludes1 notes indicating codes that cannot be used together with it, including: combined systolic (congestive) and diastolic (congestive) heart failure (I50.4-).
What SNOMED CT codes does I50.21 map to?
I50.21 maps to 5 SNOMED CT concepts: 443254009, 435861000124109, 43650005, 703272007, 7391000175102. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I50.21?
I50.21 is linked to 1 UMLS Concept Unique Identifier: C4083073. 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.