A53.9 is a billable ICD-10 code used to specify a medical diagnosis of syphilis, unspecified. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.
Unspecified diagnosis codes like A53.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Acquired syphilis
- Anetoderma secondary to syphilis
- Gingival disease caused by Treponema pallidum
- Gingival disease due to bacteria
- Maternal syphilis during pregnancy, childbirth and the puerperium
- Myelitis caused by Treponema pallidum
- Oral syphilis
- Syphilis in mother complicating childbirth
- Syphilis test finding
- Treponema pallidum ELISA positive
- Longitudinal Studies-. studies in which variables relating to an individual or group of individuals are assessed over a period of time.
- Neurosyphilis-. infections of the central nervous system caused by treponema pallidum which present with a variety of clinical syndromes. the initial phase of infection usually causes a mild or asymptomatic meningeal reaction. the meningovascular form may present acutely as brain infarction. the infection may also remain subclinical for several years. late syndromes include general paresis; tabes dorsalis; meningeal syphilis; syphilitic optic atrophy; and spinal syphilis. general paresis is characterized by progressive dementia; dysarthria; tremor; myoclonus; seizures; and argyll-robertson pupils. (adams et al., principles of neurology, 6th ed, pp722-8)
- Syphilis-. a contagious venereal disease caused by the spirochete treponema pallidum.
- Syphilis Serodiagnosis-. serologic tests for syphilis.
- Syphilis, Cardiovascular-. cardiovascular manifestations of syphilis, an infection of treponema pallidum. in the late stage of syphilis, sometimes 20-30 years after the initial infection, damages are often seen in the blood vessels including the aorta and the aortic valve. clinical signs include syphilitic aortitis, aortic insufficiency, or aortic aneurysm.
- Syphilis, Congenital-. syphilis acquired in utero and manifested by any of several characteristic tooth (hutchinson's teeth) or bone malformations and by active mucocutaneous syphilis at birth or shortly thereafter. ocular and neurologic changes may also occur.
- Syphilis, Cutaneous-. cutaneous lesions arising from infection with treponema pallidum. in the primary stage, 18-21 days following infection, one or more chancres appear. if untreated, the subsequent stages of the disease appear as syphilids. these eruptions are superficial, nondestructive, exanthematic, transient, macular roseolas that may later be maculopapular or papular polymorphous or scaly, pustular, pigmented eruptions.(arnold, odom, and james, andrew's diseases of the skin, 8th ed, p409)
- Syphilis, Latent-. the stage of syphilis that occurs following the primary (chancre) and secondary stages. the patient is asymptomatic at the latent stage but remains seropositive for the spirochete.
- Tabes Dorsalis-. parenchymatous neurosyphilis marked by slowly progressive degeneration of the posterior columns, posterior roots, and ganglia of the spinal cord. the condition tends to present 15 to 20 years after the initial infection and is characterized by lightening-like pains in the lower extremities, urinary incontinence; ataxia; severely impaired position and vibratory sense, abnormal gait (see gait disorders, neurologic), optic atrophy; argyll-robertson pupils, hypotonia, hyperreflexia, and trophic joint degeneration (charcot's joint; see arthropathy, neurogenic). (from adams et al., principles of neurology, 6th ed, p726)
- Treponema pallidum-. the causative agent of venereal and non-venereal syphilis as well as yaws.
- Congenital Syphilis-. a life-threatening bacterial infection of the newborn caused by treponema pallidum. it is transmitted to the infant from a mother with syphilis through the placenta during pregnancy. signs and symptoms include irritability, fever, failure to thrive, saddle nose, cutaneous rash, and pneumonia.
- Early Latent Syphilis-. latent syphilis when infection was acquired less than twelve months previously.
- Late Latent Syphilis-. latent syphilis when infection was acquired more than twelve months previously.
- Latent Syphilis-. a stage of syphilis characterized by the serologic evidence of infection by treponema pallidum without evidence of accompanying signs or symptoms related to the disease.
- Nephrotic Syndrome - Syphilis Associated|Syphilis Associated Nephrotic Syndrome-. nephrotic syndrome associated with a syphilis infection.
- Neurosyphilis-. infection of the brain or spinal cord by treponema pallidum. it occurs many years following the original infection which remained untreated. signs and symptoms include abnormal gait, blindness, depression, paralysis, seizures and dementia.
- Primary Syphilis-. the subclinical or symptomatic stage of syphilis, occurring at an average of three weeks after contact with an infected individual. it manifests with one or more painless, indurated ulcers (chancres) of the skin or mucous membranes at the site of inoculation. these lesions heal spontaneously within a few weeks.
- Secondary Syphilis-. the secondary stage of syphilis typically that is characterized by generalized rash (including palms and soles), mucocutaneous lesions, and lymphadenopathy. it usually begins one to two months after the primary stage.
- Syphilis-. a contagious bacterial infection caused by the spirochete treponema pallidum. it is a sexually transmitted disorder, although it can also be transmitted from the mother to the fetus in utero. typically, it is initially manifested with a single sore which heals without treatment. if the infection is left untreated, the initial stage is followed by skin rash and mucous membrane lesions. a late stage follows, which is characterized by damage of the internal organs, including the nervous system.
- Tertiary Syphilis|Late Syphilis-. a stage of syphilis that occurs fifteen to thirty years after the initial infection; it can include gumma formation and cardiovascular or central nervous system involvement (neurosyphilis).
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:
Inclusion TermsInclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Infection due to Treponema pallidum NOS
- Syphilis (acquired) NOS
Type 1 ExcludesType 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- syphilis NOS under two years of age A50.2
Index to Diseases and Injuries References
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for this diagnosis code are found in the injuries and diseases index:
Convert to ICD-9 Code
|Source ICD-10 Code||Target ICD-9 Code|
|A53.9||097.9 - Syphilis NOS|
Syphilis is a sexually transmitted disease caused by bacteria. It infects the genital area, lips, mouth, or anus of both men and women. You usually get syphilis from sexual contact with someone who has it. It can also pass from mother to baby during pregnancy.
The early stage of syphilis usually causes a single, small, painless sore. Sometimes it causes swelling in nearby lymph nodes. If you do not treat it, syphilis usually causes a non-itchy skin rash, often on your hands and feet. Many people do not notice symptoms for years. Symptoms can go away and come back.
The sores caused by syphilis make it easier to get or give someone HIV during sex. If you are pregnant, syphilis can cause complications, or you could lose your baby. In rare cases, syphilis causes serious health problems and even death.
Syphilis is easy to cure with antibiotics if you catch it early. Correct usage of latex condoms greatly reduces, but does not completely eliminate, the risk of catching or spreading syphilis. If your or your partner is allergic to latex, you can use polyurethane condoms. The most reliable way to avoid infection is to not have anal, vaginal, or oral sex.
Centers for Disease Control and Prevention
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- FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
- FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
- FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
- FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
- FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)