Navigating the FY 2024 ICD-10-CM Code Set Changes: A Comprehensive Overview

The ICD-10-CM code set update for fiscal year (FY) 2024 is bringing forth significant changes, including the addition of 395 new codes, the deletion of 25 existing codes, and the revision of 22 codes, with nine of them impacting the short title-only. Furthermore, there are 131 new headers and four revised headers, spanning nearly every section from A to Z. These will bring forward the need for healthcare compliance consultants, who have the expertise to help organizations navigate these changes 

Here’s an overview of the key changes that has taken effect since October 1, 2023: 

Certain Infectious and Parasitic Diseases: Within Chapter 1, there’s a noteworthy addition in the form of A41.54, a new code for “Sepsis due to Acinetobacter baumannii.” This addition not only introduces a new code but also triggers various revisions throughout the code book related to this condition. 

Neoplasms: In response to conditions like Familial Adenomatous Polyposis (FAP), new codes have been introduced to provide better specificity. Additionally, there’s an expansion of codes for benign neoplasms in the digestive system. The Table of Neoplasms sees revisions, including D13.9 to D13.99, and new Z codes to report a family history of FAP. New codes for desmoid tumors and specified neoplasms of connective and soft tissue are also incorporated. 

Diseases of Blood: Significant updates are seen for reporting sickle-cell disorders, Scwachman-Diamond syndrome, and IgG4-related disease, along with many parenthetical revisions. 

Endocrine, Nutritional, and Metabolic Diseases: New subcategories and codes are introduced to identify individuals with Autosomal Dominant Hypocalcemia (ADH). This chapter also includes new codes for various lipid storage disorders, improved reporting of leukodystrophies, and additional codes for metabolic disorders. 

Diseases of the Nervous System: Chronic migraine reporting is enhanced with new subcategories and codes, allowing differentiation based on pain manageability. There are also new codes in other categories, accompanied by numerous tabular lists and index changes. 

Diseases of the Eye and Adnexa: The addition of new subcategories and codes under H50 for extraocular muscle entrapment allows the identification of affected muscle parts and laterality. Further modifications relate to retinal disorders, blindness, low vision, and other eye disorders. 

Diseases of the Circulatory System: New codes are introduced to track angina and its association with coronary microvascular dysfunction. This chapter also sees the inclusion of codes for other hypertension and inappropriate sinus tachycardia, alongside relevant tabular modifications. 

Diseases of the Respiratory System: New codes address bronchiolitis obliterans and bronchiolitis obliterans syndrome. Additionally, various parenthetical notes in this chapter undergo deletions, additions, and revisions. 

Diseases of the Digestive System: Codes are added to identify intestinal microbial overgrowth and its subtypes. Furthermore, new codes cover acute appendicitis, retroperitoneal disorders, short bowel syndrome, and intestinal failure. 

Diseases of the Musculoskeletal System: Improved reporting is facilitated by new codes for age-related osteoporosis with current pathological fractures in the pelvis. 

Diseases of the Genitourinary System: New codes are introduced to specify immunoglobulin A nephropathy and membranous nephropathy. These updates allow for more precise identification of these conditions. 

Pregnancy: Codes are created to distinguish various conditions complicating postpartum acute kidney failure. New codes also enable the trimester-specific reporting of intrahepatic cholestasis in pregnancy. 

Congenital Malformations: Alagille syndrome receives clearer identification through new Q codes and inclusion terms, enhancing diagnostic accuracy for this rare genetic disorder. 

Symptoms, Signs, and Abnormal Clinical and Lab Findings: The introduction of several codes under R92.3 aids in identifying different types of breast density, allowing for more detailed reporting. Additionally, codes for foreign body sensations in circulatory and respiratory systems and nontraumatic coma due to underlying conditions are included. 

Injury, Poisoning, and Other External Causes: Codes for gadolinium are added to the Table of Drugs and Chemicals. There are also changes in parenthetical notes. 

External Causes of Morbidity: Serious cases of foreign bodies entering natural orifices, such as swallowed button batteries and sharp glass, are now coded under category W44. 

Factors Influencing Health Status: New codes cover various aspects, including child welfare exams, newborn evaluation for suspected conditions, resistance to carbapenem, and acute HIV infection syndrome. Additionally, Z codes provide coding specificity for family history of adenomatous polyps, child guardianship, and other determinants of health. 

How does it affect you?  

In the wake of these significant changes to the ICD-10-CM codes for FY 2024, the impact is profound across the healthcare landscape, influencing various stakeholders. 

Providers: Healthcare providers are faced with the imperative to update their existing solutions comprehensively. This spans a range of crucial systems such as Revenue Cycle Management (RCM), Electronic Health Record (EHR) portals, and billing portals. The goal is to seamlessly integrate the new codes into their operational framework, ensuring accurate documentation, streamlined billing processes, and, ultimately, optimal patient care. 

Payers: For insurance payers, the challenge lies in redefining ICD codes at various stages of the eligibility process. This includes critical junctures like claims processing, adjudication, and prior authorization. Software solutions that automate these intricate processes also demand thorough revisions. Adapting to the updated ICD codes is essential to ensure precise and efficient claims handling, reducing errors, and facilitating smoother interactions with healthcare providers. 

Health Information Technology (HIT) Vendors: HIT vendors find themselves in a position where they need to revisit their off-the-shelf solutions meticulously. The objective is to prevent errors in new releases, ensuring seamless integration and functionality with the updated ICD-10-CM codes. Addressing these changes proactively is essential to guarantee the reliability and accuracy of the software solutions they offer to healthcare providers and payers. 


In essence, these updates not only impact the day-to-day operations of healthcare providers and payers but also necessitate a proactive approach from technology vendors. Adapting to the new ICD-10-CM codes is not just a regulatory requirement; it’s a pivotal step toward enhancing the efficiency and accuracy of the entire healthcare ecosystem. These significant changes within the FY 2024 ICD-10-CM code set, have already come into effect from October 1, 2023. This is the right to set everything right before the next fiscal year starts.  

This is where we come in. Our experts provide healthcare compliance services all over the US. They have the knowledge and expertise required to navigate these regulations. We can help you seamlessly incorporate these changes into your system. Connect with us at

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Mitrajit Das

Mitrajit Das

A writer with a keen interest in the Healthcare domain and B2B content marketing. He enjoys writing and creating pieces around the latest Healthcare IT trends using the simplest of words.
Mitrajit Das

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