I45.81
BillableLong QT syndrome
Long QT syndrome
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •systemic connective tissue disordersM30-M36
- •transient cerebral ischemic attacks and related syndromesG45
Related Codes(1)
Also Known As / Clinical Terms(72)
SNOMED CT
- Long Q-T syndrome9651007
- Long QT syndrome9651007
- Prolonged Q-T interval syndrome9651007
- Romano-Ward syndrome20852007
- Increased QT interval111975006
- Prolonged QT interval111975006
- Periodic paralysis198030008
- Congenital conduction defect315027009
- Finding of electrocardiogram QT interval365417009
- QT interval - finding365417009
- Cardio-auditory syndrome373905003
- Jervell and Lange-Nielsen syndrome373905003
- Andersen Tawil syndrome422348008
- Andersen cardiodysrhythmic periodic paralysis422348008
- Long QT syndrome 7422348008
- Congenital long QT syndrome442917000
- Familial long QT syndrome442917000
- Inherited long QT syndrome442917000
- Acquired long QT syndrome442946007
- Long QT syndrome caused by drug715971003
- Long QT syndrome type 41208861007
- Long QT syndrome type 51208863005
- Long QT syndrome type 21208864004
- Long QT syndrome type 31208866002
- Long QT syndrome type 121208868001
- Long QT syndrome type 131208870005
- Long QT syndrome type 111208881008
- Long QT syndrome type 101208884000
- Long QT syndrome type 61208909006
- Long QT syndrome type 91208911002
UMLS
Clinical Terms
- long q t syndrome
- Long QT syndrome type 13
- Jervell and Lange-Nielsen syndrome
- LQT
- Romano-Ward syndrome
- Familial long QT syndrome
- Long QT syndrome type 4
- Andersen cardiodysrhythmic periodic paralysis
- Periodic paralysis
- Long QT syndrome type 11
- Prolonged QT interval
- Long QT syndrome type 2
- Long QT syndrome type 10
- Long QT syndrome type 12
- Long QT syndrome type 9
- Cardio-auditory syndrome
- Andersen Tawil syndrome
- QT interval - finding
- Acquired long QT syndrome
- Congenital conduction defect
- Inherited long QT syndrome
- Long QT syndrome type 3
- Finding of electrocardiogram QT interval
- Long QT syndrome caused by drug
- Prolonged Q-T interval syndrome
- Long QT syndrome 7
- Long Q-T syndrome
- Congenital long QT syndrome
- Long QT syndrome type 6
- Long QT syndrome (disorder)
- Long QT syndrome type 5
- Increased QT interval
Frequently Asked Questions
What is the ICD-10 code for long qt syndrome?
The ICD-10-CM code for long qt syndrome is I45.81. The full clinical description is "Long QT syndrome". I45.81 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code I45.81 mean?
ICD-10-CM code I45.81 represents “Long QT syndrome”. 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 I45.81 a billable code?
Yes, I45.81 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is I45.81 in?
I45.81 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).
What SNOMED CT codes does I45.81 map to?
I45.81 maps to 21 SNOMED CT concepts: 442946007, 422348008, 373905003, 315027009, 442917000, and 16 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for I45.81?
I45.81 is linked to 1 UMLS Concept Unique Identifier: C0023976. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does I45.81 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like long qt syndrome affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of I45.81?
There is no direct ICD-11 mapping available for I45.81 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.