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ICD-10 Guide
ICD-10 CodesChapter 1: Certain infectious and parasitic diseasesA63

A63

Non-billable

Syphilis

Chapter 1:Certain infectious and parasitic diseases

BILLABLE STATUSNo
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED08/28/2025

Code Description

ICD-10 A63 is a used to indicate a diagnosis of syphilis.

Key Diagnostic Point:

Sexually transmitted chlamydial infection.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity
ICD-10 Code A63 (Other predominantly sexually transmitted diseases, not elsewhere classified), as a non-billable code, raises the rating of coding complexity for a few often interconnected reasons. Rating: High Factors contributing to complexity: 1. Non-Specificity: As a non-billable code, A63 can't be submitted for reimbursement and it needs to be specified to a greater level of detail to describe the specifics of the patient’s condition. The use of such non-specific codes presents complexity for coders to manage. 2. Updating and Training: Any code changes like additions, deletions, or revisions requires staff education and software updates. These factors often increase coding complexity and demand detailed tracking of updates. 3. Code Expansion: ICD-10 introduced a significantly larger amount of codes, that are more specific and detailed. For code A63, the coder needs to utilise one or more extensions to reach a billable level. Audit Risks: 1. Inaccurate Coding: In the case where code A63 is inaccurately used, it results in non-reimbursements causing monetary losses and compliance risks. Such inaccuracies can also come from insufficient documentation. 2. Fraud and Abuse: Overcoding, undercoding, or incorrectly using a non-billable code like A63 can potentially raise fraud and abuse concerns, especially if misused deliberately. 3. Non-compliance Risks: If coders fail to use the necessary extensions to specify the diagnosis under A63, it can cause non-compliance issues with insurance companies and regulatory bodies, attracting audits. In conclusion, the use of the non-billable ICD-10 code A63 requires careful guidance, accurate documentation, and consistently updated training to ensure accuracy, mitigating audit risks and ensuring the best patient care.

Specialty Focus

Coding Guidelines

Inclusion Criteria

Use A63 When
  • 10 code A63 is an umbrella code for other viral diseases that are characteristically sexually transmitted, but that can be transmitted via other means as well
  • It is a non
  • billable code, meaning it is not sufficient justification for admission to an acute care hospital when used as a principal diagnosis
  • Guidelines:
  • Inclusion Criteria: It includes diseases such as anogenital (venereal) warts, condyloma acuminatum, molluscum contagiosum, and pelvic inflammatory disease (notably, gonococcal and chlamydial)
  • These include AIDS (B20), herpesviral [herpes simplex] infections (A60), and sexually transmitted chlamydial diseases (A55
  • Code First: If a disease listed under this code has a known causal organism, the infection should be coded first (B95
  • In other words, if the condition is being caused by a specific infection, that infection should be coded before the A63 code

Exclusion Criteria

Do NOT use A63 When
  • Exclusion Criteria: Certain related conditions have their own specific codes and therefore should not be coded under A63
  • It's very important to be familiar with the inclusion and exclusion criteria to avoid such mistakes

Related CPT Codes

Since A63 is a non-billable ICD-10 code that is used to designate Not Elsewhere Classified (NEC) conditions related to certain infections of skin and subcutaneous tissue, it itself would not be billed. However, it could be used in tandem with other, more specific codes. Also, please note that CPT (Current Procedural Terminology) codes used can greatly vary based on the specifics of the patient case. Below are some common CPT codes that one might see used together with an appropriate ICD-10 sub-code to A63. 1. CPT Code 54150 (Circumcision, using clamp or other device with regional dorsal penile or ring block) - A male patient presents with balanitis (ICD-10 A63.0), an inflammation of the glans, the head of the penis. 2. CPT Code 58563 (Hysteroscopy, surgical; with endometrial ablation) - A female patient presents with condyloma acuminatum (ICD-10 A63.0), also known as genital warts, in her cervical or vaginal region. 3. CPT Code 11420 (Excision, benign lesion; excised diameter 0.5cm or less, scalp, neck, hands, feet, genitalia) - A patient presents with anogenital (venereal) warts (ICD-10 A63.0) which need to be surgically removed. 4. CPT Code 17000 (Destruction (eg, laser surgery, electrosurgery, cryosurgery, chemosurgery, surgical curettement), of benign lesions other than skin tags) - A patient presents with verruca vulgaris (ICD-10 A63.0), more commonly known as common warts, on the skin. 5. CPT Code 54050 (Destruction of lesion of skin of genital area) - A patient comes in for the removal of genital warts (ICD-10 A63.0). 6. CPT Code 54056 (Cryotherapy for treatment of genital warts) - A patient is treated for condylomata acuminata (ICD-10 A63.0). Keep in mind that these scenarios are strictly illustrative and the coding used can vary greatly depending on patient specifics and health care provider preferences.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

ICD-10 (International Classification of Diseases, Tenth Revision) is a system used by physicians and healthcare providers to classify and code all the diagnoses, symptoms, and medical procedures recorded in conjunction with hospital care in the United States. If we discuss the impact of ICD-10 specifically on coding for A63 (Non-billable), which includes certain conditions associated with sexual transmission, there may not be many significant changes in terms of specificity, reimbursement, and documentation. Here's why:
1. Specificity: ICD-10 is designed to be significantly more specific than its predecessor, ICD-9. This means that while under ICD-9, a disease or condition may only have a few broad codes, under ICD-10, that same condition can have numerous codes to describe it more accurately. However, for A63 (Non-billable) in particular, the specificity may remain the same because it covers a range of conditions that are non-billable and are usually not otherwise specified.
2. Reimbursement: Under ICD-10, healthcare providers typically receive more accurate reimbursements due to increased specificity. However, for A63 (Non-billable), this may not apply since the coding denotes conditions that are typically not eligible for direct reimbursement in the first place.

ICD-9 vs ICD-10

ICD-10 (International Classification of Diseases, Tenth Revision) is a system used by physicians and healthcare providers to classify and code all the diagnoses, symptoms, and medical procedures recorded in conjunction with hospital care in the United States. If we discuss the impact of ICD-10 specifically on coding for A63 (Non-billable), which includes certain conditions associated with sexual transmission, there may not be many significant changes in terms of specificity, reimbursement, and documentation. Here's why: 1. Specificity: ICD-10 is designed to be significantly more specific than its predecessor, ICD-9. This means that while under ICD-9, a disease or condition may only have a few broad codes, under ICD-10, that same condition can have numerous codes to describe it more accurately. However, for A63 (Non-billable) in particular, the specificity may remain the same because it covers a range of conditions that are non-billable and are usually not otherwise specified. 2. Reimbursement: Under...

Reimbursement & Billing Impact

reimbursement, and documentation. Here's why:

Resources

Clinical References

1. World Health Organization (WHO): WHO is responsible for maintaining and publishing the International Classification of Diseases (ICD). Hence, it is the most authoritative source for ICD-10 codes. 2. Centers for Disease Control and Prevention (CDC): The National Center for Health Statistics (NCHS) under the CDC is responsible for the use of ICD-10 in the United States. The CDC's website includes detailed breakdowns of ICD-10 codes along with updates and guidelines. 3. American Medical Association (AMA): AMA provides tools and resources for coding and billing including the latest updates on ICD-10, CPT, and HCPCS, which would be relevant for non-billable codes like A63. 4. American Health Information Management Association (AHIMA): AHIMA offers various resources for disease coding, including ICD-10, and they produce regular publications regarding coding trends and best practices. 5. ICD10data.com: This website is a free reference website provided by the open-source clinical data community with a searchable comprehensive ICD-10 code set. The page for ICD-10 code A63 is among its resources. 6. ICD10monitor: This is an online news and information service dedicated to ICD. It offers authoritative databases and resources for ICD-10, inclusive of non-billable code A63. 7. The Centers for Medicare and Medicaid Services (CMS): CMS provides a variety of resources relating to the use of ICD-10 codes, including coding guidelines and updates on billing practices.

Coding & Billing References

1. World Health Organization (WHO): WHO is responsible for maintaining and publishing the International Classification of Diseases (ICD). Hence, it is the most authoritative source for ICD-10 codes. 2. Centers for Disease Control and Prevention (CDC): The National Center for Health Statistics (NCHS) under the CDC is responsible for the use of ICD-10 in the United States. The CDC's website includes detailed breakdowns of ICD-10 codes along with updates and guidelines. 3. American Medical Association (AMA): AMA provides tools and resources for coding and billing including the latest updates on ICD-10, CPT, and HCPCS, which would be relevant for non-billable codes like A63. 4. American Health Information Management Association (AHIMA): AHIMA offers various resources for disease coding, including ICD-10, and they produce regular publications regarding coding trends and best practices. 5. ICD10data.com: This website is a free reference website provided by the open-source clinical data community with a searchable comprehensive ICD-10 code set. The page for ICD-10 code A63 is among its resources. 6. ICD10monitor: This is an online news and information service dedicated to ICD. It offers authoritative databases and resources for ICD-10, inclusive of non-billable code A63. 7. The Centers for Medicare and Medicaid Services (CMS): CMS provides a variety of resources relating to the use of ICD-10 codes, including coding guidelines and updates on billing practices.

Frequently Asked Questions