D37-D48
Medium Complexity
Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
Primary Specialty: Oncology
Last Updated: 2025-09-09
ICD-10 Codes (112)
112 billable0 category headers
D38Billable
D38.0Billable
D38.1Billable
D38.2Billable
D38.3Billable
D38.4Billable
D38.5Billable
D38.6Billable
D39Billable
D39.0Billable
D39.1Billable
D39.10Billable
D39.11Billable
D39.12Billable
D39.2Billable
D39.8Billable
D39.9Billable
D40Billable
D40.0Billable
D40.1Billable
D40.10Billable
D40.11Billable
D40.12Billable
D40.8Billable
D40.9Billable
D41Billable
D41.0Billable
D41.00Billable
D41.01Billable
D41.02Billable
D41.1Billable
D41.10Billable
D41.11Billable
D41.12Billable
D41.2Billable
D41.20Billable
D41.21Billable
D41.22Billable
D41.3Billable
D41.4Billable
D41.8Billable
D41.9Billable
D42Billable
D42.0Billable
D42.1Billable
D42.9Billable
D43Billable
D43.0Billable
D43.1Billable
D43.2Billable
D43.3Billable
D43.4Billable
D43.8Billable
D43.9Billable
D44Billable
D44.0Billable
D44.1Billable
D44.10Billable
D44.11Billable
D44.12Billable
D44.2Billable
D44.3Billable
D44.4Billable
D44.5Billable
D44.6Billable
D44.7Billable
D44.9Billable
D45Billable
D46Billable
D46.0Billable
D46.1Billable
D46.2Billable
D46.20Billable
D46.21Billable
D46.22Billable
D46.4Billable
D46.9Billable
D47Billable
D47.0Billable
D47.01Billable
D47.02Billable
D47.09Billable
D47.1Billable
D47.2Billable
D47.3Billable
D47.4Billable
D47.9Billable
D48Billable
D48.0Billable
D48.1Billable
D48.11Billable
D48.110Billable
D48.111Billable
D48.112Billable
D48.113Billable
D48.114Billable
D48.115Billable
D48.116Billable
D48.117Billable
D48.118Billable
D48.119Billable
D48.19Billable
D48.2Billable
D48.3Billable
D48.4Billable
D48.5Billable
D48.6Billable
D48.60Billable
D48.61Billable
D48.62Billable
D48.7Billable
D48.9Billable
Updates & Changes
FY 2026 Updates
Current Year
Deleted Codes
No codes deleted in this range for FY 2026
No significant changes for FY 2026
This range maintains stability with current coding practices
Historical Changes
- •FY 2025: Routine maintenance updates with minor terminology clarifications
- •FY 2024: Enhanced specificity requirements for certain code ranges
- •FY 2023: Updated documentation guidelines for improved clarity
Upcoming Changes
- •Proposed updates pending review by Coordination and Maintenance Committee
- •Under consideration: Enhanced digital health integration codes
Implementation Guidance
- •Review all FY 2026 updates for D37-D48 codes before implementation
- •Always verify the most current codes in the ICD-10-CM manual
- •Ensure clinical documentation supports the selected diagnosis codes
- +3 more guidance items...
Range Overview
high priority
The ICD-10 code range D37-D48 pertains to Neoplasms of uncertain behavior, polycythemia vera, and myelodysplastic syndromes. These codes are used to classify and report diagnoses where the behavior of the neoplasm (tumor) is uncertain or unspecified, and for conditions like polycythemia vera and myelodysplastic syndromes. The codes provide a way to track these conditions, inform treatment strategies, and aid in epidemiological studies.
Key Usage Points:
- •Always code to the highest level of specificity.
- •Use additional codes to identify any associated conditions or complications.
- •For neoplasms of uncertain behavior, the site of the neoplasm should be identified.
- •Polycythemia vera and myelodysplastic syndromes have specific codes within this range.
- •Follow the alphabetic index and tabular list for correct code selection.
Coding Guidelines
When to Use:
- ✓When the behavior of the neoplasm is uncertain after diagnostic workup.
- ✓When a patient is diagnosed with polycythemia vera.
- ✓When a patient is diagnosed with a myelodysplastic syndrome.
- ✓When the site of the neoplasm is known but its behavior is uncertain.
- ✓When the neoplasm is stated as uncertain, possible, probable, suspected, likely, questionable, or rule out.
When NOT to Use:
- ✗When the behavior of the neoplasm is confirmed as benign or malignant.
- ✗When the site of the neoplasm is not known.
- ✗When the patient has a history of neoplasm, but no current disease.
- ✗When the patient has a family history of neoplasm, but no personal diagnosis.
- ✗When the patient has a neoplasm-related syndrome but not a neoplasm.
Code Exclusions
Always verify exclusions in the Tabular List of the ICD-10-CM.
Documentation Requirements
Documentation for codes in the D37-D48 range should clearly state the diagnosis, the behavior of the neoplasm if known, and the site of the neoplasm. For polycythemia vera and myelodysplastic syndromes, the specific condition should be documented.
Clinical Information:
- •Specific diagnosis
- •Behavior of the neoplasm
- •Site of the neoplasm
- •Presence of any associated conditions or complications
- •Results of any diagnostic tests
Supporting Evidence:
- •Pathology reports
- •Imaging reports
- •Laboratory test results
- •Clinical notes
Good Documentation Example:
Patient diagnosed with neoplasm of uncertain behavior of the liver.
Poor Documentation Example:
Patient has a liver neoplasm.
Common Documentation Errors:
- âš Not specifying the behavior of the neoplasm
- âš Not specifying the site of the neoplasm
- âš Not including associated conditions or complications
- âš Not using the highest level of specificity
Range Statistics
13
Total Codes
112
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:3
Coding Complexity
Medium
Complexity Rating
The complexity of coding in this range is considered medium. This is due to the need to determine the behavior and site of the neoplasm, identify any associated conditions or complications, follow the alphabetic index and tabular list for correct code selection, and code to the highest level of specificity.
Key Factors:
- â–¸Determining the behavior of the neoplasm
- â–¸Identifying the site of the neoplasm
- â–¸Identifying any associated conditions or complications
- â–¸Following the alphabetic index and tabular list for correct code selection
- â–¸Coding to the highest level of specificity
Specialty Focus
These codes are primarily used by oncologists, hematologists, and pathologists. They are also used by general practitioners and internists when a patient presents with a neoplasm of uncertain behavior or a condition like polycythemia vera or a myelodysplastic syndrome.
Primary Specialties:
Oncology
40%
Hematology
30%
Pathology
20%
Clinical Scenarios:
- • A patient presents with a liver neoplasm of uncertain behavior.
- • A patient is diagnosed with polycythemia vera.
- • A patient has a neoplasm of uncertain behavior in the pancreas.
- • A patient is diagnosed with a myelodysplastic syndrome.
- • A patient has a neoplasm of uncertain behavior in the lung.
Resources & References
Resources for these codes include the ICD-10-CM Official Guidelines for Coding and Reporting, the American Health Information Management Association (AHIMA), and the American Academy of Professional Coders (AAPC). These resources provide coding guidelines, clinical documentation tips, and educational materials.
Official Guidelines:
- ICD-10-CM Official Guidelines for Coding and Reporting
- AHIMA Coding Guidelines
- AAPC Coding Guidelines
Clinical References:
- National Cancer Institute
- American Society of Hematology
Educational Materials:
- AHIMA ICD-10 Training
- AAPC ICD-10 Training
Frequently Asked Questions
What is the difference between a neoplasm of uncertain behavior and a neoplasm of unspecified behavior?
A neoplasm of uncertain behavior is one where the behavior is not specified as either benign or malignant after diagnostic workup. A neoplasm of unspecified behavior is one where the behavior is not stated in the medical record.