ICD-10-CM Code A50.31

Valid for Submission

A50.31 is a billable code used to specify a medical diagnosis of late congenital syphilitic interstitial keratitis. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code A50.31 might also be used to specify conditions or terms like bacterial keratitis or keratitis due to syphilis or syphilitic interstitial keratitis.

Index to Diseases and Injuries

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 the code A50.31 are found in the index:

• - Keratitis (nodular) (nonulcerative) (simple) (zonular) - H16.9
  • - in (due to)
    • - syphilis - A50.31
  • - interstitial (nonsyphilitic) - H16.30
    • - syphilitic (congenital) (late) - A50.31
  • - punctata
    • - syphilitic (profunda) - A50.31
  • - syphilitic (congenital) (prenatal) - A50.31

• - Syphilis, syphilitic (acquired) - A53.9
  • - congenital - A50.9
    • - interstitial keratitis - A50.31
    • - late, or 2 years or more after birth NEC - A50.7
      • - interstitial keratitis - A50.31
  • - keratitis (congenital) (interstitial) (late) - A50.31

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• Bacterial keratitis
• Keratitis due to syphilis
• Syphilitic interstitial keratitis

Diagnostic Related Groups

The ICD-10 code A50.31 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2020 through 09/30/2020.

• 124 - OTHER DISORDERS OF THE EYE WITH MCC
• 125 - OTHER DISORDERS OF THE EYE WITHOUT MCC

Convert A50.31 to ICD-9

• 090.3 - Syphilitic keratitis (Approximate Flag)

Code Classification

• Certain infectious and parasitic diseases (A00–B99)
  • Infections with a predominantly sexual mode of transmission (A50-A64)
    • Congenital syphilis (A50)

Code History

• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
  (First year ICD-10-CM implemented into the HIPAA code set)
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Tools

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• Convert A50.31 to ICD-9