2017/18 ICD-10-CM Diagnosis Code K23

Disorders of esophagus in diseases classified elsewhere

ICD-10-CM Coding Rules
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying disease, such as:
  • congenital syphilis (
    ICD-10-CM Diagnosis Code A50.5

    Other late congenital syphilis, symptomatic

      2016 2017 2018 Non-Billable/Non-Specific Code
    Applicable To
    • Any congenital syphilitic condition specified as late or manifest two years or more after birth.
    A50.5
    )
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as K23. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • late syphilis (
    ICD-10-CM Diagnosis Code A52.79

    Other symptomatic late syphilis

      2016 2017 2018 Billable/Specific Code
    Applicable To
    • Late syphilitic leukoderma
    • Syphilis of adrenal gland
    • Syphilis of pituitary gland
    • Syphilis of thyroid gland
    • Syphilitic splenomegaly
    Type 1 Excludes
    • syphilitic leukoderma (secondary) (A51.39)
    A52.79
    )
  • megaesophagus due to Chagas' disease (
    ICD-10-CM Diagnosis Code B57.31

    Megaesophagus in Chagas' disease

      2016 2017 2018 Billable/Specific Code
    B57.31
    )
  • tuberculosis (
    ICD-10-CM Diagnosis Code A18.83

    Tuberculosis of digestive tract organs, not elsewhere classified

      2016 2017 2018 Billable/Specific Code
    Type 1 Excludes
    • tuberculosis of intestine (A18.32)
    A18.83
    )
The following code(s) above K23 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 K23:
  • K00-K95
    2018 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
  • K20-K31
    2018 ICD-10-CM Range K20-K31

    Diseases of esophagus, stomach and duodenum

    Type 2 Excludes
    Diseases of esophagus, stomach and duodenum
ICD-10-CM K23 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert K23 to ICD-9-CM

Code History
ICD-10-CM Codes Adjacent To K23
K22.5 Diverticulum of esophagus, acquired
K22.6 Gastro-esophageal laceration-hemorrhage syndrome
K22.7 Barrett's esophagus
K22.70 …… without dysplasia
K22.71 Barrett's esophagus with dysplasia
K22.710 Barrett's esophagus with low grade dysplasia
K22.711 Barrett's esophagus with high grade dysplasia
K22.719 …… unspecified
K22.8 Other specified diseases of esophagus
K22.9 Disease of esophagus, unspecified
K23 Disorders of esophagus in diseases classified elsewhere
K25 Gastric ulcer
K25.0 Acute gastric ulcer with hemorrhage
K25.1 Acute gastric ulcer with perforation
K25.2 Acute gastric ulcer with both hemorrhage and perforation
K25.3 Acute gastric ulcer without hemorrhage or perforation
K25.4 Chronic or unspecified gastric ulcer with hemorrhage
K25.5 Chronic or unspecified gastric ulcer with perforation
K25.6 Chronic or unspecified gastric ulcer with both hemorrhage and perforation
K25.7 Chronic gastric ulcer without hemorrhage or perforation
K25.9 Gastric ulcer, unspecified as acute or chronic, without hemorrhage or perforation

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