The FY 2022 ICD-10-CM code set introduced important changes for healthcare providers, medical coders, and billing professionals. Released by the Centers for Disease Control and Prevention (CDC), the new code set included 159 new ICD-10-CM codes, along with updates to the Tabular List, Alphabetic Index, and related addenda.
The new codes became effective October 1, 2021, making it essential for coding professionals to understand the changes before the start of the new fiscal year.
What Changed in FY 2022 ICD-10-CM?
The FY 2022 update included new codes and expanded existing categories across multiple ICD-10-CM chapters. The changes addressed conditions ranging from infectious diseases and mental health to musculoskeletal disorders, injuries, social determinants of health, and post-COVID-19 conditions.
A major addition was U09.9 – Post COVID-19 condition, unspecified, which provided a specific code for certain conditions associated with a previous COVID-19 infection.
FY 2022 New ICD-10-CM Codes by Chapter
| Chapter | ICD-10-CM Category | New Codes | Major Highlights |
|---|---|---|---|
| 1 | Infectious and Parasitic Diseases | 1 | A77.49 – Ehrlichiosis |
| 2 | Neoplasms | 3 | New codes involving malignant bilateral ovarian conditions |
| 3 | Blood and Blood-Forming Organs | 5 | Expansion of D75.83 – Thrombocytosis |
| 4 | Endocrine, Nutritional & Metabolic Diseases | 1 | E75.244 – Niemann-Pick disease A/B |
| 5 | Mental, Behavioral & Neurodevelopmental Disorders | 3 | Expansion of depression codes |
| 6 | Nervous System | 10 | Expansion of toxic encephalopathy codes |
| 7 | Eye | 0 | No new codes |
| 8 | Ear & Mastoid Process | 0 | No new codes |
| 9 | Circulatory System | 1 | I5A – Non-ischemic myocardial injury |
| 10 | Respiratory System | 0 | No new codes |
| 11 | Digestive System | 13 | K31.A- – Gastric intestinal metaplasia |
| 12 | Skin & Subcutaneous Tissue | 8 | New irritant dermatitis categories |
| 13 | Musculoskeletal System | 23 | Updates for Sjögren syndrome, axial spondyloarthritis and low back pain |
| 14 | Genitourinary System | 0 | No new codes |
| 15 | Pregnancy, Childbirth & Puerperium | 0 | No new codes |
| 16 | Perinatal Period | 9 | Expansion of abnormal neonatal screening findings |
| 17 | Congenital Conditions | 0 | No new codes |
| 18 | Signs & Symptoms | 14 | Expansion of cough and feeding difficulty codes |
| 19 | Injuries & Poisonings | 45 | Traumatic brain compression, herniation and cannabis-related poisoning codes |
| 20 | External Causes | 3 | Expansion of legal intervention codes |
| 21 | Factors Influencing Health Status | 19 | New and expanded social determinants of health codes |
| 22 | Special Purposes | 1 | U09.9 – Post-COVID-19 condition |
Major Updates to Watch
1. Post-COVID-19 Condition
One of the most significant additions was U09.9 – Post COVID-19 condition, unspecified. The new code helped identify patients experiencing certain conditions following a previous COVID-19 infection.
Because COVID-19 continued to have a substantial impact on healthcare, this addition was particularly important for documentation, diagnosis coding, and reporting.
2. Social Determinants of Health
Chapter 21 received several important additions related to Social Determinants of Health (SDOH).
The FY 2022 code set expanded categories covering areas such as:
- Educational circumstances
- Housing instability
- Homelessness
- Food insecurity
- Economic circumstances
- Inadequate drinking-water supply
These codes provide healthcare organizations with additional ways to capture social circumstances that may affect a patient’s health and access to care.
3. Mental and Behavioral Health
The FY 2022 update expanded certain depression-related codes, giving coders additional specificity when reporting depressive disorders.
Accurate documentation of the patient’s condition remains essential when selecting the appropriate level of diagnosis specificity.
4. Musculoskeletal Conditions
The musculoskeletal chapter received one of the largest expansions, with 23 new codes.
Updates included expanded coding for:
- Sjögren syndrome
- Non-radiographic axial spondyloarthritis
- Low back pain
These additions provide greater specificity for documenting and reporting musculoskeletal conditions.
5. Neurological Conditions
The nervous system chapter included new and expanded codes for toxic encephalopathy.
These changes allow coding professionals to capture certain neurological conditions with greater specificity when supported by provider documentation.
6. Injuries and Poisonings
Chapter 19 received the largest number of new codes, with 45 additions.
Important updates included codes related to:
- Traumatic brain compression
- Traumatic brain herniation
- Poisoning by cannabis
- Adverse effects of cannabis
Given the complexity of injury and poisoning coding, healthcare organizations should carefully review the updated Tabular instructions before assigning these codes.
Why the Tabular Addenda Matters
The list of new codes does not represent every change included in the FY 2022 update. There were also numerous revisions to coding instructions, inclusion terms, Excludes notes, and other Tabular List information.
For this reason, coders should not rely solely on a list of newly created codes. Reviewing the Tabular Addenda and complete ICD-10-CM code set is important for understanding how the new and revised codes should be reported.
Preparing for FY 2022 ICD-10-CM Updates
Healthcare organizations can take several steps to prepare for annual ICD-10-CM changes:
- Review all new and revised codes before the October 1 implementation date.
- Update coding software and electronic health record systems.
- Educate medical coders and billing staff about significant changes.
- Review documentation requirements with providers.
- Examine new Tabular instructions and coding notes.
- Update internal coding policies and procedures.
- Monitor claims after implementation to identify potential coding or reimbursement issues.
The Importance of Accurate Medical Coding
ICD-10-CM codes play an important role in diagnosis reporting, claims processing, reimbursement, quality reporting, and healthcare data analysis. Even small changes to coding instructions can affect how diagnoses are reported.
For medical practices that do not have sufficient internal resources to monitor annual code-set updates, professional medical coding and billing services can provide valuable support. Experienced coding teams can help review documentation, apply appropriate codes, identify potential errors, and support compliant revenue cycle processes.
Conclusion
The FY 2022 ICD-10-CM update introduced 159 new codes and numerous changes to existing coding categories. Significant additions included U09.9 for post-COVID-19 conditions, expanded social determinants of health codes, new injury and poisoning codes, and updates involving musculoskeletal, neurological, digestive, mental health, and other conditions.
Since the new codes became effective October 1, 2021, healthcare providers and coding professionals needed to prepare in advance by reviewing the complete code set, Tabular Addenda, and Official Coding Guidelines.
Staying current with ICD-10-CM changes is essential for maintaining accurate coding, compliant claims, and efficient medical billing operations.