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2024 ICD-10-CM Medical Code Update: A introduction to understanding new codes in ICD-10-CM for 2024

The ICD-10-CM code set update for 2024 introduces 395 new codes, removes 25 existing codes, and revises 22 codes with nine revisions. 2024 ICD-10-CM medical code update

Additionally, there are 131 new headers and four revised headers. While not every section from A to Z is impacted, there are significant changes across the code set. Those looking to obtain a medical coding certification for 2024 will need keep up-to-date on changes. MedicalCodingbyJen has done a list of all the new update changes in this list for you. I hope this helps! These 2024 ICD10 CM medical coding changes are subject to change again before we see the new books. I will keep you informed.

2024 ICD-10-CM medical code update

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Certain Infectious and Parasitic Diseases: 2024 ICD-10-CM medical code update

  • Several new codes added for better specificity in identifying known conditions.

  • Notable addition in Chapter 1: A41.54 - Sepsis due to Acinetobacter baumannii

  • New codes may lead to revisions in the index and tabular list within this chapter.


  • Familial adenomatous polyposis (FAP), an inherited disorder, has one new code.

  • A separate code for benign neoplasms in other parts of the digestive system.

  • Revision in the Table of Neoplasms: D13.9 is now D13.99 for specific body areas.

  • New Z codes for reporting family history of FAP.

  • Added codes for desmoid tumors (D48.11-) and other specified neoplasms of uncertain behavior of connective and other soft tissue (D48.19).

Diseases of Blood:

  • Additions and revisions in this chapter for reporting sickle-cell disorders.

  • New codes for Scwachman-Diamond syndrome (D61.02) and IgG4-related disease (D89.84), along with parenthetical revisions.

Endocrine, Nutritional, and Metabolic Diseases:

  • Autosomal dominant hypocalcemia (ADH) is a genetic disorder of calcium metabolism.

  • Two types of ADH: Type 1 caused by mutations in the calcium-sensing receptor (CaSR) gene protein and Type 2 caused by mutations in the GNA11 gene.

  • New subcategory with multiple codes to identify individuals with ADH.

  • Several new codes for various lipid storage disorders.

  • New codes for improved reporting of leukodystrophies.

  • One new code for lysosome-associated membrane protein 2 [LAMP2] deficiency (E74.05).

  • New codes for metabolic disorders, including E88.810-E88.819 for insulin resistant metabolic syndrome types A and B, and unspecified insulin resistance.

  • One new code for wasting disease (syndrome) due to an underlying condition (E88.A).

Diseases of the Nervous System:

  • New subcategories and codes under G43 Migraine for reporting chronic migraine and differentiating manageable pain. 2024 ICD-10-CM medical code update

  • Many new codes and revisions in the tabular list and index for other categories in this chapter.

Diseases of the Eye and Adnexa:

  • New subcategories and codes under H50 Other strabismus for reporting extraocular muscle entrapment.

  • These new codes (H50.62 – H50.68) specify the affected part of the extraocular muscle and laterality. 2024 ICD-10-CM medical code update

  • Additional modifications in this chapter include a new subcategory and codes under H36 Retinal disorders for reporting proliferative and non-proliferative sickle-cell retinopathy.

  • New codes added under H54 Blindness and low vision, and H57 Other disorders of eye and adnexa.

Diseases of the Circulatory System:

  • Several new codes introduced to track coronary microvascular dysfunction associated with angina. 2024 ICD-10-CM medical code update

  • New codes for other hypertension (I1A-) and inappropriate sinus tachycardia (I47.10-I47.19) added in this chapter.

  • Various tabular modifications and code revisions related to the above additions.

Diseases of the Respiratory System:

  • New subcategory and codes to identify bronchiolitis obliterans and bronchiolitis obliterans syndrome.

  • New code first and code also notes provided under these codes.

  • Numerous other deletions, additions, and revisions to parenthetical notes in this chapter.

Diseases of the Digestive System:

  • Specific codes added to identify intestinal microbial overgrowth and its subtypes, including small intestinal bacterial overgrowth (SIBO), intestinal methanogen overgrowth (IMO), and small intestinal fungal overgrowth (SIFO).

  • New codes for acute appendicitis (K35.200-K35.211, K35.219), disorders of the retroperitoneum (K68.2-K68.3), short bowel syndrome (SBS) with or without continuity between the short bowel and colon (K90.821-K90.822, K90.829), and intestinal failure (K90.83).

Diseases of the Musculoskeletal System:

  • New codes added for improved reporting of age-related osteoporosis with current pathological fracture and other osteoporosis with current pathological fracture in the pelvis.

Diseases of the Genitourinary System:

  • New codes requested by the Renal Physicians Association for immunoglobulin A nephropathy (IgAN), the most common form of glomerulonephropathy.

  • Look for new codes under N02.B for recurrent and persistent immunoglobulin A nephropathy.

  • New codes added for membranous nephropathy (MN) under categories N04 Nephrotic syndrome and N06 Isolated proteinuria with specified morphological lesion.


  • New codes created to clarify coding for postpartum acute kidney failure, separating anuria, oliguria, and hepatorenal syndrome complicating the puerperium.

  • New codes (O26.64-) added for reporting intrahepatic cholestasis in pregnancy with the ability to specify the trimester.

Congenital Malformations:

  • New Q codes and inclusion terms created for clearer identification of Alagille syndrome, a rare genetic disorder primarily affecting the liver and other organs.

  • New codes added to better identify craniosynostosis and specific syndromes like Bardet-Biedl syndrome, Laurence-Moon syndrome, and MED13L syndrome.

  • Q93.52 Phelan-McDermid syndrome added to identify the genetic neurodevelopmental condition with multi-system manifestations.

Symptoms, Signs, and Abnormal Clinical and Lab Findings: 2024 ICD-10-CM medical code update

  • New codes added under R92.3 to identify different types of breast density found on mammographic imaging.

  • New codes for reporting foreign body sensation in various areas of the circulatory and respiratory systems (R09.A-).

  • New code for the diagnosis of a nontraumatic coma due to an underlying condition (R40.2A).

Injury, Poisoning, and Other External Causes:

  • New codes for gadolinium (T56.821-T56.824) added to the Table of Drugs and Chemicals.

  • Some parenthetical notes added and deleted.

External Causes of Morbidity:

  • New category W44 Foreign body entering into or through a natural orifice replaces category T16-T19 for more serious objects inserted where they don't belong.

  • Examples include codes for swallowed button battery (W44.A1) or sharp glass (W44.C1).

Factors Influencing Health Status: 2024 ICD-10-CM medical code update

  • New code for reporting a child welfare exam (Z02.84).

  • Two new codes under Z05.8 for observation and evaluation of newborn for other specified suspected condition ruled out.

  • New code for identifying resistance to carbapenem (Z16.13).

  • New Z22.34- codes for reporting carriers of other specified bacterial diseases.

  • Addition of a new code for acute HIV infection syndrome and HIV pre-exposure prophylaxis (PrEP) to increase awareness and reduce the burden of HIV disease.

  • New Z codes for coding specificity for family history of adenomatous polyps.

  • New codes for reporting additional social determinants of health, such as a child in custody of a non-relative guardian (Z62.24) and other specified problems related to upbringing (Z62.8-).

Please note that this is just a summary, and there are many more changes and additions throughout the ICD-10-CM code set. For a comprehensive list of all the updates, it's important to refer to the official documentation and guidelines provided by the Centers for Disease Control and Prevention (CDC) and the National Center for Health Statistics (NCHS).

2024 ICD-10-CM medical code update

Also, please keep a watch out on my website for new material for all 2024 updates Click HERE!!

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