Full Answer
Why ICD-10 codes are important
Used for medical claim reporting in all healthcare settings, ICD-10-CM is a standardized classification system of diagnosis codes that represent conditions and diseases, related health problems, abnormal findings, signs and symptoms, injuries, external causes of injuries and diseases, and social circumstances.
The new codes are for describing the infusion of tixagevimab and cilgavimab monoclonal antibody (code XW023X7), and the infusion of other new technology monoclonal antibody (code XW023Y7).
Unspecified atrial fibrillation. Atrial fibrillation; Atrial fibrillation with rapid ventricular response. ICD-10-CM Diagnosis Code I48.91. Unspecified atrial fibrillation. 2016 2017 2018 2019 2020 2021 Billable/Specific Code. ICD-10-CM Diagnosis Code I48.0 [convert to ICD-9-CM] Paroxysmal atrial fibrillation.
Duration a key factor in recognizing the type of atrial fibrillation. Become familiar with the durations that define the specific types if AF.
The Excludes 1 note is here because these type of atrial fibrillation are mutually exclusive due to their respective differences in duration. Query for clarification if there is conflicting documentation.
The different types of atrial fibrillation classified in category I48 are NOT distinguishable from each other based on an EKG/ECG result. However, subtypes and related arrhythmias may be identified, such as “Ashman’s phenomenon” and right bundle branch block.
“Paroxysmal” refers to a brief event, a “paroxysm.” Paroxysmal atrial fibrillation (PAF) may be due to stress or alcohol consumption. The only treatment prescribed may be lifestyle changes. See Section III. Reporting Additional Diagnoses of the Official Guidelines for Coding and Reporting when documentation is present for subsequent encounters.
“RVR” means that he heart is beating faster than 100 beats per minute (BPM). The pace can range from 100 to 120 to 145 and back again. RVR is not a type of atrial fibrillation.
Paroxysmal atrial fibrillation (PAF) is thought to constitute between 25 and 60% of cases of AF.
The code for “atrial fibrillation with RVR” is 91 Unspecified atrial fibrillation
We have received a denial for code I50.21 [Acute systolic (con gestive) heart failure] . The only physician documentation that I can find in this record states, "New onset mild systolic congestive heart failure; left bundle branch block, mild left ventricular global hypokinesis." Also, I do not see the term "new onset" listed in the ICD-10-CM Alphabetic Index for heart failure nor in the Tabular List for this code. Am I missing something that the coder didn't? Or should a query have been sent for clarification?
The denial letter states, "I50.21 cannot be validated as relevant to this admission ." What is your interpretation of this--coding or clinical validation denial? If this is a clinical validation denial, we will not appeal the denial as there are no clinical indicators or treatments to support acute CHF. However, if this is a coding issue, it goes back to the question of "Does 'new-onset' mean 'acute?'" The term "systolic" HF is documented, but we cannot find the term "acute" HF, only "new onset" HF. So based on your response and since there was no clarification query, I don't think we would have a successful appeal. Thank you for your input.
Usually however, new onset or the initial diagnosis IS most often made in a patient who is presenting in a decompensated and wet state, meaning that in many cases you don't have this conflict as it is both new on set and acutely severe at the initial diagnosis.
If they just discovered a chronic heart failure, then the fact that it is a "new diagnosis" doesn't mean it is "new onset", and you could just have chronic in that instance.
The application of the coding rules can be Draconian. Even with the term ‘new onset’, the chart must explicitly document the acuity of the HF. However, you did not state ‘why’ the case was denied? Does the 3rd party question the coding or the clinical validity? Is the term systolic or HFrEF charted as well as acuity? Did the patient have at least some of the traditional clinical findings expected and treated to support the condition of an acute form of HF?