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B20
ICD-10-CM
Acquired Immunodeficiency Syndrome

Find comprehensive information on Acquired Immunodeficiency Syndrome (AIDS) diagnosis, including clinical documentation, medical coding, and healthcare guidelines. Learn about HIV disease progression, AIDS-defining illnesses, and relevant ICD-10 codes for accurate medical record keeping and billing. This resource provides essential information for healthcare professionals, coders, and patients seeking to understand AIDS diagnosis and management.

Also known as

AIDS
HIV Disease

Diagnosis Snapshot

Key Facts
  • Definition : Late stage HIV infection marked by severely weakened immunity, increasing risk of opportunistic infections and cancers.
  • Clinical Signs : Frequent infections, rapid weight loss, persistent fever, swollen lymph nodes, fatigue, diarrhea.
  • Common Settings : HIV clinics, infectious disease departments, primary care facilities, community health centers.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC B20 Coding
B20-B24

Human immunodeficiency virus [HIV] disease

Conditions caused by the human immunodeficiency virus.

B25-B49

Other infectious and parasitic diseases

Infectious diseases not classified elsewhere, like CMV or toxoplasmosis, often seen in HIV/AIDS.

Z21

Asymptomatic human immunodeficiency virus [HIV] infection status

Indicates a person has tested positive for HIV but shows no symptoms.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the patient documented as having AIDS?

  • Yes

    Is there Kaposi's sarcoma?

  • No

    Is it documented as HIV disease?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Late-stage HIV infection with severe immune deficiency.
Infection with Human Immunodeficiency Virus.
HIV infection not progressing to AIDS.

Documentation Best Practices

Documentation Checklist
  • Document HIV viral load and CD4 count.
  • Specify opportunistic infections (e.g., PCP, KS).
  • Detail AIDS-defining illnesses if present.
  • Note current antiretroviral therapy (ART) regimen.
  • Record history of HIV diagnosis and progression.

Coding and Audit Risks

Common Risks
  • Unspecified HIV stage

    Coding AIDS without specifying stage (e.g., asymptomatic, symptomatic, progression to AIDS) leads to inaccurate severity reflection and reimbursement.

  • HIV vs. AIDS Confusion

    Miscoding HIV infection as AIDS or vice versa, impacting data integrity for public health reporting and resource allocation.

  • Opportunistic Infection Coding

    Failure to capture all AIDS-defining opportunistic infections or coding them incorrectly can affect quality metrics and reimbursement.

Mitigation Tips

Best Practices
  • HIV screening, early ART initiation for AIDS prevention. ICD-10: B20
  • Monitor CD4 count, viral load for disease progression. SNOMED CT: 14028007
  • Opportunistic infection prophylaxis, ART adherence counseling. HCC: RAF
  • Promote safe sex practices, harm reduction strategies. ICD-10: Z72.51
  • Address psychosocial needs, mental health support. CPT: 90837

Clinical Decision Support

Checklist
  • Confirm HIV infection diagnosis (ICD-10: B20)
  • CD4 count <200 cells/mm3 or AIDS-defining illness present
  • Document opportunistic infections (e.g., PCP, KS)
  • Review patient history for relevant risk factors
  • Assess and document current medications and treatments

Reimbursement and Quality Metrics

Impact Summary
  • ICD-10-CM Coding: B20 impacts AIDS reimbursement rates and quality reporting tied to HIV care metrics.
  • Accurate HIV/AIDS diagnosis coding (B20) affects hospital case-mix index and resource allocation.
  • Proper AIDS coding ensures appropriate reimbursement for antiretroviral therapy (ART) and related services.
  • Quality measures for AIDS/HIV, linked to B20 coding, influence hospital performance scores and value-based payments.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes for . Our AI-powered assistant ensures compliance and reduces coding errors.

Frequently Asked Questions

Common Questions and Answers

Q: What are the latest CDC recommendations for HIV pre-exposure prophylaxis (PrEP) initiation and management in adolescents and young adults?

A: The CDC recommends offering PrEP to all adolescents and young adults who report behaviors that increase their risk of HIV acquisition, such as inconsistent condom use with partners of unknown HIV status or injection drug use. Clinicians should assess risk individually and discuss PrEP as a viable prevention strategy. Recent updates emphasize shared decision-making with patients, tailoring the PrEP regimen (daily oral or on-demand), and ensuring adherence support. Explore how the CDC's clinical practice guidelines provide detailed guidance on PrEP eligibility, prescription, monitoring, and follow-up care, including specific recommendations for adolescent and young adult populations.

Q: How can clinicians differentiate between acute HIV infection and other common viral illnesses presenting with similar symptoms like fever, rash, and lymphadenopathy?

A: Acute HIV infection can mimic many common viral illnesses, making diagnosis challenging based solely on clinical presentation. While symptoms like fever, rash, and lymphadenopathy are common, they are not specific to HIV. A thorough sexual history and risk assessment are crucial. Clinicians should consider a fourth-generation HIV antibody/antigen combination test for early detection. If negative but clinical suspicion remains high, repeat testing in 2-4 weeks or HIV RNA testing should be performed. Consider implementing a standardized protocol in your practice to improve early HIV diagnosis and prompt initiation of antiretroviral therapy (ART), which is essential for optimal patient outcomes. Learn more about the CDC's diagnostic testing algorithm for HIV infection.

Quick Tips

Practical Coding Tips
  • Code B20 for HIV, not AIDS
  • Z21 for HIV asymptomatic status
  • R75 for inconclusive HIV test
  • Document exposure details for B20
  • Specify stage for accurate AIDS coding

Documentation Templates

Patient presents with signs and symptoms suggestive of Acquired Immunodeficiency Syndrome (AIDS), a late stage of HIV infection.  The patient reports experiencing opportunistic infections, including recent episodes of Pneumocystis pneumonia (PCP) and oral candidiasis (thrush).  Weight loss, fatigue, and lymphadenopathy are also noted.  Laboratory findings reveal a significantly depleted CD4 T-cell count (below 200 cells/mm3) confirming the diagnosis of AIDS.  HIV viral load is elevated.  The patient's medical history includes a prior diagnosis of Human Immunodeficiency Virus (HIV) infection, though adherence to antiretroviral therapy (ART) is reportedly inconsistent.  Differential diagnoses considered included other immunodeficiency disorders, but the clinical picture and laboratory results are consistent with AIDS.  The patient's current presentation necessitates initiation of highly active antiretroviral therapy (HAART) to manage HIV viral load and improve immune function.  Patient education regarding medication adherence, opportunistic infection prophylaxis, and lifestyle modifications to support immune health will be provided.  Referral to infectious disease specialist and social services for support and resources will be made.  Prognosis is dependent on response to HAART and management of opportunistic infections.  Follow-up appointments are scheduled to monitor CD4 count, viral load, and overall clinical status.  ICD-10 code B20 will be used for billing and coding purposes.  This documentation supports medical necessity for ongoing HIV care and treatment.