A51.3
Non-billableSecondary syphilis of skin and mucous membranes
Secondary syphilis of skin and mucous membranes
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- diseases generally recognized as communicable or transmissible
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- carrier or suspected carrier of infectious disease (Z22.-)
- infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
- infectious and parasitic diseases specific to the perinatal period (P35-P39)
- influenza and other acute respiratory infections (J00-J22)
- human immunodeficiency virus [HIV] disease (B20)
Use Additional Code
Additional codes that should follow this code
- code to identify resistance to antimicrobial drugs (Z16.-)
Child Codes (3)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code A51.3?
ICD-10-CM code A51.3 represents "Secondary syphilis of skin and mucous membranes". It is a non-billable header code — use a more specific child code for billing purposes.
Is A51.3 a billable code?
No, A51.3 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under A51.3.
What chapter is A51.3 in?
A51.3 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).
What codes cannot be used with A51.3?
A51.3 has Excludes1 notes indicating codes that cannot be used together with it, including: certain localized infections - see body system-related chapters; nonspecific and nongonococcal urethritis (N34.1); Reiter's disease (M02.3-).
What are the subcategories under A51.3?
A51.3 has 3 child codes, including: A51.31 (Condyloma latum), A51.32 (Syphilitic alopecia), A51.39 (Other secondary syphilis of skin).
Are additional codes required with A51.3?
Yes, when using A51.3 you should also code: code to identify resistance to antimicrobial drugs (Z16.-).
What are the UMLS CUIs for A51.3?
A51.3 is linked to 1 UMLS Concept Unique Identifier: C0343677. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.