I95-I99
Medium Complexity
Other and unspecified disorders of the circulatory system
Primary Specialty: Cardiology
Last Updated: 2025-09-09
ICD-10 Codes (63)
42 billable19 category headers
I96Billable
I97I97.0Billable
I97.1I97.11I97.110Billable
I97.111Billable
I97.12I97.120Billable
I97.121Billable
I97.13I97.130Billable
I97.131Billable
I97.19I97.190Billable
I97.191Billable
I97.2Billable
I97.3Billable
I97.4I97.41I97.410Billable
I97.411Billable
I97.418Billable
I97.42Billable
I97.5I97.51Billable
I97.52Billable
I97.6I97.61I97.610Billable
I97.611Billable
I97.618Billable
I97.62I97.620Billable
I97.621Billable
I97.622Billable
I97.63I97.630Billable
I97.631Billable
I97.638Billable
I97.64I97.640Billable
I97.641Billable
I97.648Billable
I97.7I97.71I97.710Billable
I97.711Billable
I97.79I97.790Billable
I97.791Billable
I97.8I97.81I97.810Billable
I97.811Billable
I97.82I97.820Billable
I97.821Billable
I97.88Billable
I97.89Billable
I99I99.8Billable
I99.9Billable
Updates & Changes
FY 2026 Updates
Current Year
New Codes (1)
I16.9
Hypertensive crisis, unspecified, with target organ damage
Revised Codes (2)
I12.0
Hypertensive chronic kidney disease with stage 5 chronic kidney disease - updated staging
I15.9
Secondary hypertension, unspecified - enhanced documentation requirements
Deleted Codes
No codes deleted in this range for FY 2026
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 I95-I99 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 I95-I99 pertains to other and unspecified disorders of the circulatory system. This category includes conditions such as hypotension, shock, and other vascular disorders. These codes are used to document various circulatory system disorders not classified elsewhere. They provide a more specific diagnosis, aiding in appropriate treatment and management of the patient's condition.
Key Usage Points:
- •I95-I99 codes are used when a patient's condition doesn't fall under other specific circulatory system disorder categories.
- •These codes are often used in conjunction with other codes to provide a comprehensive patient diagnosis.
- •Always code to the highest level of specificity within the I95-I99 range.
- •Remember to consider the patient's medical history when selecting the appropriate code.
- •Always review the latest ICD-10 updates to ensure accurate coding.
Coding Guidelines
When to Use:
- ✓When a patient presents with hypotension not classified elsewhere.
- ✓When a patient is diagnosed with shock, not due to trauma.
- ✓When a patient has a vascular disorder not classified in other categories.
- ✓When a patient has a circulatory system disorder as a result of surgery or medical treatment.
- ✓When a patient has a chronic or acute circulatory system disorder without a more specific code.
When NOT to Use:
- ✗When a more specific code is available for the patient's condition.
- ✗When the condition is due to trauma (use injury codes).
- ✗When the condition is a direct result of pregnancy (use pregnancy complication codes).
- ✗When the condition is congenital (use congenital disorder codes).
- ✗When the condition is neoplastic (use neoplasm codes).
Code Exclusions
Always verify exclusions by cross-referencing the patient's condition with the ICD-10 manual.
Documentation Requirements
Documentation for I95-I99 codes should be thorough and specific. It should include a detailed description of the patient's condition, any underlying conditions, and the clinical rationale for the diagnosis.
Clinical Information:
- •Detailed description of the patient's symptoms and condition.
- •Any underlying conditions or comorbidities.
- •Clinical rationale for the diagnosis.
- •Any relevant patient medical history.
- •Outcome of any relevant diagnostic tests.
Supporting Evidence:
- •Lab results, imaging studies, and other diagnostic test results.
- •Physician's notes detailing the patient's condition and treatment plan.
- •Consultation notes from specialists, if applicable.
Good Documentation Example:
Patient presents with chronic orthostatic hypotension. Blood pressure drops significantly upon standing. Patient has a history of Parkinson's disease.
Poor Documentation Example:
Patient has low blood pressure.
Common Documentation Errors:
- âš Not documenting to the highest level of specificity.
- âš Not including supporting evidence such as lab results.
- âš Not documenting underlying conditions or comorbidities.
- âš Not updating codes when a more specific diagnosis is made.
Range Statistics
Total Codes
42
Billable
Complexity:
Medium
Primary Use:Clinical Documentation
Chapter:9
Coding Complexity
Medium
Complexity Rating
Coding within the I95-I99 range requires a solid understanding of the circulatory system and associated disorders. Coders must be able to identify the most specific code for the patient's condition, navigate exclusions, and stay current with ICD-10 updates. The need to code any underlying conditions or comorbidities also adds to the complexity.
Key Factors:
- â–¸Determining the most specific code within the I95-I99 range.
- â–¸Identifying and coding any underlying conditions or comorbidities.
- â–¸Staying current with ICD-10 updates affecting the I95-I99 range.
- â–¸Navigating exclusions and knowing when not to use these codes.
- â–¸Understanding and applying clinical context.
Specialty Focus
I95-I99 codes are commonly used in cardiology, internal medicine, and general practice. These specialties often encounter patients with circulatory system disorders.
Primary Specialties:
Cardiology
50%
Internal Medicine
30%
General Practice
20%
Clinical Scenarios:
- • A patient presents with chronic low blood pressure not associated with other conditions.
- • A patient presents with shock not due to trauma or other classified conditions.
- • A patient has a vascular disorder as a complication of surgery.
- • A patient presents with an acute circulatory system disorder without a more specific diagnosis.
- • A patient with a chronic circulatory system disorder requires ongoing management.
Resources & References
There are numerous resources available for coding within the I95-I99 range. These include the official ICD-10 manual, clinical reference books, and educational materials from coding organizations.
Official Guidelines:
- ICD-10-CM Official Guidelines for Coding and Reporting
- American Health Information Management Association (AHIMA) Coding Guidelines
- American Academy of Professional Coders (AAPC) Coding Guidelines
Clinical References:
- Harrison's Principles of Internal Medicine
- Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine
Educational Materials:
- AAPC ICD-10 Training
- AHIMA ICD-10 Training
Frequently Asked Questions
Can I use a code from the I95-I99 range if a more specific code is available?
No, always use the most specific code available for the patient's condition. The I95-I99 range is for other and unspecified disorders of the circulatory system.