What are the ICD-10 codes for encephalopathy, thrush, strep TSS, RLE necrotizing fasciitis, and R AKA infection?

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From the Guidelines

The ICD-10 codes for the specified conditions are as follows: For encephalopathy, the general code is G93.40, though specific types have their own codes (such as toxic encephalopathy G92 or metabolic encephalopathy G93.41). Thrush (oral candidiasis) is coded as B37.0. Streptococcal toxic shock syndrome (TSS) is coded as A48.3. Necrotizing fasciitis of the right lower extremity (RLE) is coded as M72.6 with an additional code to specify the right lower limb. Right above-knee amputation (R AKA) infection would be coded as T87.43 for infection of amputation stump, right lower extremity. These codes are essential for accurate medical documentation, proper billing, and epidemiological tracking. When using these codes in practice, it's important to include any additional modifiers or secondary codes that might be required to fully describe the patient's specific condition, especially for conditions like encephalopathy where the underlying cause should be coded when known, as discussed in the context of encephalitis diagnosis and management 1. The accurate coding of these conditions is crucial for ensuring the best possible outcomes in terms of morbidity, mortality, and quality of life, and for facilitating appropriate clinical management and research, as highlighted by the need for early and aggressive treatment of necrotizing infections 1 and the importance of standardized case definitions for encephalitis 1. Key considerations in coding these conditions include:

  • Ensuring the use of the most specific and accurate codes available
  • Including additional modifiers or secondary codes as necessary to fully describe the patient's condition
  • Being aware of the potential for clinical overlap between conditions, such as encephalitis and encephalopathy, and coding accordingly
  • Staying up-to-date with the latest coding guidelines and recommendations, such as those provided by the International Encephalitis Consortium 1.

From the Research

ICD-10 Codes

  • Encephalopathy: G93.41 [no direct reference to a study, as the provided studies do not mention the ICD-10 code for encephalopathy]
  • Thrush: B37.0 [no direct reference to a study, as the provided studies do not mention the ICD-10 code for thrush]
  • Strep TSS: A40.0 [no direct reference to a study, as the provided studies do not mention the ICD-10 code for strep TSS, but the condition is discussed in 2, 3]
  • RLE necrotizing fasciitis: M72.6 [no direct reference to a study, as the provided studies do not mention the ICD-10 code for necrotizing fasciitis, but the condition is discussed in 2, 4, 3, 5]
  • R AKA infection: I70.263 [no direct reference to a study, as the provided studies do not mention the ICD-10 code for R AKA infection]

Relevant Studies

  • The studies 2, 4, 3, 5 discuss necrotizing fasciitis and streptococcal toxic shock syndrome, but do not provide ICD-10 codes.
  • Study 6 discusses ICD-10-CM diagnosis coding, but does not provide specific codes for the conditions mentioned in the question.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Necrotizing fasciitis.

Internal medicine (Tokyo, Japan), 2010

Research

ICD-10-CM Diagnosis Coding for Neuropsychological Assessment.

Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists, 2019

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Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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