Chlamydial lymphogranuloma (venereum) (A55) ICD-10-CM
The A55 code range covers chlamydial lymphogranuloma (venereum) with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Inclusion 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.
- Climatic or tropical bubo
- Durand-Nicolas-Favre disease
- Esthiomene
- Lymphogranuloma inguinale
Codes in the A55 Range 1 codes · 1 billable
- A55 Chlamydial lymphogranuloma (venereum)
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A55 range.
Lymphogranuloma Venereum
Subacute inflammation of the inguinal lymph glands caused by certain immunotypes of CHLAMYDIA TRACHOMATIS. It is a sexually transmitted disease in the U.S. but is more widespread in developing countries. It is distinguished from granuloma venereum (see GRANULOMA INGUINALE), which is caused by Calymmatobacterium granulomatis.
About the A55 Code Range
ICD-10 code A55 is used to identify chlamydial lymphogranuloma venereum, a sexually transmitted infection caused by the bacterium Chlamydia trachomatis. This condition involves infection and inflammation of the lymphatic vessels and nodes, often presenting as swollen lymph glands in the genital or groin area.
Known by several synonyms such as lymphogranuloma venereum, venereal disease caused by Chlamydia trachomatis, and infectious edema, this ICD-10 code helps healthcare providers and coders accurately document early, late, or latent stages of the disease. It also covers complications like chronic lymphatic vessel disease and lymphedema resulting from the infection, sometimes referred to as esthiomene or chronic acquired lymphedema. Applying code A55 ensures precise coding for cases involving this unique chlamydial dermatological and lymphatic disorder, aiding in appropriate treatment tracking and epidemiological reporting.
Questions About This Page
How many billable codes are in the A55 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the A55 range classify?
The range classifies chlamydial lymphogranuloma (venereum). Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
