1C20
Chlamydial conjunctivitis
Chlamydial conjunctivitis
Classification
ICD-11
Block
1C20-1C2ZParent Code
BlockL2-1C2ICD-10 Mapping
1 equivalentWHO Foundation
View on WHOICD-10 Equivalents(1)
ICD-10 Equivalents
View full mappingCorresponding ICD-10-CM codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(11)
SNOMED CT ↗
- Chronic follicular conjunctivitis39429002
- Adult chlamydial keratoconjunctivitis56009001
- Chlamydial conjunctivitis231861005
- Chronic chlamydial follicular conjunctivitis1217671004
- Bilateral bacterial conjunctivitis15680641000119106
- Bilateral chlamydial conjunctivitis15680081000119109
- Conjunctivitis of left eye caused by Chlamydia trachomatis15680161000119101
- Conjunctivitis of left eye caused by bacteria15680601000119109
- Conjunctivitis of right eye caused by Chlamydia trachomatis15680121000119106
- Conjunctivitis of right eye caused by bacteria15680561000119109
Frequently Asked Questions
What is the ICD-11 code for chlamydial conjunctivitis?
The ICD-11 code for chlamydial conjunctivitis is 1C20. The full clinical description is "Chlamydial conjunctivitis".
What does ICD-11 code 1C20 mean?
ICD-11 code 1C20 represents “Chlamydial conjunctivitis”. It is classified under Chapter 1: Certain Infectious or Parasitic Diseases.
What chapter is 1C20 in?
1C20 is in Chapter 1: Certain Infectious or Parasitic Diseases (codes 1A00-1H0Z).
What is the ICD-10 equivalent of ICD-11 code 1C20?
1C20 maps to the ICD-10 code: A74.0 (Chlamydial conjunctivitis). This is an equivalent mapping.
What is the difference between ICD-10 and ICD-11?
ICD-11 is the latest revision of the WHO's International Classification of Diseases, succeeding ICD-10. Key differences include: a fully digital-first design, new chapters for sleep-wake disorders, sexual health, and traditional medicine, improved coding for rare diseases, and better integration with electronic health records through extension codes.
What SNOMED CT codes does 1C20 map to?
1C20 maps to 10 SNOMED CT concepts: 56009001, 15680641000119106, 15680081000119109, 231861005, 1217671004, and 5 more. SNOMED CT is a clinical terminology used in electronic health records.
What UMLS concepts map to ICD-11 code 1C20?
1C20 is linked to 1 UMLS Concept Unique Identifier: C0009770. 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.