ICD-10-CM Codes
A00-B99
A50-A64
A56-
2023 ICD-10-CM Diagnosis Code A56.3

2023 ICD-10-CM Diagnosis Code A56.3

Chlamydial infection of anus and rectum

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

A56.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM A56.3 became effective on October 1, 2022.
This is the American ICD-10-CM version of A56.3 - other international versions of ICD-10 A56.3 may differ.

The following code(s) above A56.3 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to A56.3:

A00-B99
2023 ICD-10-CM Range A00-B99
Certain infectious and parasitic diseases
Includes
- diseases generally recognized as communicable or transmissible
Type 1 Excludes
- certain localized infections - see body system-related chapters
Type 2 Excludes
- 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)
Use Additional
- code to identify resistance to antimicrobial drugs (Z16.-)
Certain infectious and parasitic diseases
A50-A64
2023 ICD-10-CM Range A50-A64
Infections with a predominantly sexual mode of transmission
Type 1 Excludes
- human immunodeficiency virus [HIV] disease (B20)
- nonspecific and nongonococcal urethritis (N34.1)
- Reiter's disease (M02.3-)
Infections with a predominantly sexual mode of transmission
A56
ICD-10-CM Diagnosis Code A56
Other sexually transmitted chlamydial diseases
Includes
- sexually transmitted diseases due to Chlamydia
- trachomatis
Type 1 Excludes
- neonatal chlamydial conjunctivitis (P39.1)
- neonatal chlamydial pneumonia (P23.1)
Type 2 Excludes
- chlamydial lymphogranuloma (A55)
- conditions classified to A74.-
Other sexually transmitted chlamydial diseases

Approximate Synonyms

Chlamydia infection of anus and rectum

ICD-10-CM A56.3 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

393 Other digestive system diagnoses with mcc
394 Other digestive system diagnoses with cc
395 Other digestive system diagnoses without cc/mcc

Convert A56.3 to ICD-9-CM

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): No change
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to A56.3:

Chlamydia, chlamydial A74.9
ICD-10-CM Diagnosis Code A74.9
Chlamydial infection, unspecified
Applicable To
Chlamydiosis NOS
- proctitis A56.3
Disease, diseased - see also Syndrome
- venereal A64
  - see also Disease, sexually transmitted
  ICD-10-CM Diagnosis Code A64
  Unspecified sexually transmitted disease
  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  - chlamydial NEC A56.8
    ICD-10-CM Diagnosis Code A56.8
    Sexually transmitted chlamydial infection of other sites
    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    - anus A56.3
    - rectum A56.3
Infection, infected, infective (opportunistic) B99.9
ICD-10-CM Diagnosis Code B99.9
Unspecified infectious disease
- Chlamydia, chlamydial A74.9
  ICD-10-CM Diagnosis Code A74.9
  Chlamydial infection, unspecified
  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  Applicable To
  Chlamydiosis NOS
  - anus A56.3
  - rectum A56.3
Proctitis K62.89
ICD-10-CM Diagnosis Code K62.89
Other specified diseases of anus and rectum
Applicable To
Proctitis NOS
Use Additional
code for any associated fecal incontinence (R15.-)
- chlamydial A56.3

ICD-10-CM Codes Adjacent To A56.3

A56 Other sexually transmitted chlamydial diseases

A56.0 Chlamydial infection of lower genitourinary tract

A56.00 …… unspecified

A56.01 Chlamydial cystitis and urethritis

A56.02 Chlamydial vulvovaginitis

A56.09 Other chlamydial infection of lower genitourinary tract

A56.1 Chlamydial infection of pelviperitoneum and other genitourinary organs

A56.11 Chlamydial female pelvic inflammatory disease

A56.19 Other chlamydial genitourinary infection

A56.2 Chlamydial infection of genitourinary tract, unspecified

A56.3 Chlamydial infection of anus and rectum

A56.4 Chlamydial infection of pharynx

A56.8 Sexually transmitted chlamydial infection of other sites

A57 Chancroid

A58 Granuloma inguinale

A59 Trichomoniasis

A59.0 Urogenital trichomoniasis

A59.00 …… unspecified

A59.01 Trichomonal vulvovaginitis

A59.02 Trichomonal prostatitis

A59.03 Trichomonal cystitis and urethritis

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2023 ICD-10-CM Diagnosis Code A56.3

Chlamydial infection of anus and rectum

Certain infectious and parasitic diseases

Infections with a predominantly sexual mode of transmission

Other sexually transmitted chlamydial diseases

Chlamydial infection, unspecified

Unspecified sexually transmitted disease

Sexually transmitted chlamydial infection of other sites

Unspecified infectious disease

Chlamydial infection, unspecified

Other specified diseases of anus and rectum