AutoICD API

A51.4

Non-billable

Other secondary syphilis

Other secondary syphilis

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

A50-A64

Parent Code

A51

Child Codes

7

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)

  • certain localized infections - see body system-related chapters
  • nonspecific and nongonococcal urethritis (N34.1)
  • Reiter's disease (M02.3-)

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 (7)

A51.41

Secondary syphilitic meningitis

BillableA51.42

Secondary syphilitic female pelvic disease

BillableA51.43

Secondary syphilitic oculopathy

BillableA51.44

Secondary syphilitic nephritis

BillableA51.45

Secondary syphilitic hepatitis

BillableA51.46

Secondary syphilitic osteopathy

BillableA51.49

Other secondary syphilitic conditions

Billable

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is ICD-10 code A51.4?

ICD-10-CM code A51.4 represents "Other secondary syphilis". It is a non-billable header code — use a more specific child code for billing purposes.

Is A51.4 a billable code?

No, A51.4 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 7 child codes under A51.4.

What chapter is A51.4 in?

A51.4 is in Chapter 1: Certain Infectious and Parasitic Diseases (codes A00-B99).

What codes cannot be used with A51.4?

A51.4 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 A51.4?

A51.4 has 7 child codes, including: A51.41 (Secondary syphilitic meningitis), A51.42 (Secondary syphilitic female pelvic disease), A51.43 (Secondary syphilitic oculopathy), A51.44 (Secondary syphilitic nephritis), and 3 more.

Are additional codes required with A51.4?

Yes, when using A51.4 you should also code: code to identify resistance to antimicrobial drugs (Z16.-).

What are the UMLS CUIs for A51.4?

A51.4 is linked to 1 UMLS Concept Unique Identifier: C0348147. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

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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.