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ICD-10 Guide
ICD-10 CodesE72.1

E72.1

Billable

Disorders of sulfur-bearing amino-acid metabolism

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 E72.1 is a billable code used to indicate a diagnosis of disorders of sulfur-bearing amino-acid metabolism.

Key Diagnostic Point:

Disorders of sulfur-bearing amino-acid metabolism primarily involve the metabolism of amino acids such as cysteine, methionine, and homocysteine. These disorders can arise from genetic enzyme deficiencies that disrupt normal metabolic pathways, leading to an accumulation of toxic metabolites or a deficiency of essential compounds. Common conditions associated with this code include cystathionine beta-synthase deficiency, which can lead to homocystinuria, and disorders related to methionine metabolism. Clinically, patients may present with a range of symptoms including developmental delays, neurological deficits, vascular complications, and skeletal abnormalities. Diagnosis typically involves biochemical testing to measure amino acid levels in plasma and urine, alongside genetic testing to identify specific enzyme deficiencies. Management may include dietary modifications, supplementation with specific amino acids, and in some cases, pharmacological interventions. Early diagnosis and intervention are crucial to prevent long-term complications associated with these metabolic disorders.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of underlying genetic conditions
  • Need for biochemical testing for accurate diagnosis
  • Potential for overlapping symptoms with other metabolic disorders
  • Variability in clinical presentation among patients

Audit Risk Factors

  • Inadequate documentation of biochemical test results
  • Failure to specify the underlying genetic condition
  • Misclassification of related metabolic disorders
  • Lack of clarity in clinical notes regarding symptoms

Specialty Focus

Medical Specialties

Genetics

Documentation Requirements

Detailed family history and genetic testing results must be documented.

Common Clinical Scenarios

Patients presenting with unexplained developmental delays or metabolic crises.

Billing Considerations

Genetic counseling may be necessary for families, and documentation should reflect the need for ongoing monitoring.

Pediatrics

Documentation Requirements

Growth and developmental assessments, along with dietary history.

Common Clinical Scenarios

Infants or children with signs of metabolic disorders, such as failure to thrive.

Billing Considerations

Pediatricians should document any referrals to specialists for comprehensive care.

Coding Guidelines

Inclusion Criteria

Use E72.1 When
  • According to ICD
  • 10 guidelines, E72
  • 1 should be used when there is a confirmed diagnosis of a disorder related to sulfur
  • bearing amino acids
  • Documentation must support the diagnosis with biochemical and genetic testing results
  • bearing amino acids

Exclusion Criteria

Do NOT use E72.1 When
  • Exclusion criteria include other metabolic disorders that do not involve sulfur

Related ICD-10 Codes

Related CPT Codes

83088CPT Code

Amino acid analysis

Clinical Scenario

Used to confirm the diagnosis of sulfur-bearing amino acid disorders.

Documentation Requirements

Results of the amino acid analysis must be documented in the patient's medical record.

Specialty Considerations

Geneticists and metabolic specialists should ensure that the analysis is interpreted in the context of clinical findings.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, improving the accuracy of diagnoses and treatment plans. E72.1 provides a clear classification for disorders of sulfur-bearing amino acids, facilitating better patient management and research.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of metabolic disorders, improving the accuracy of diagnoses and treatment plans. E72.1 provides a clear classification for disorders of sulfur-bearing amino acids, facilitating better patient management and research.

Reimbursement & Billing Impact

reimbursement and to ensure that patients receive appropriate care.

Resources

Clinical References

  • •
    National Organization for Rare Disorders (NORD)

Coding & Billing References

  • •
    National Organization for Rare Disorders (NORD)

Frequently Asked Questions

What are the common symptoms of disorders of sulfur-bearing amino-acid metabolism?

Common symptoms include developmental delays, neurological deficits, vascular complications, and skeletal abnormalities. Symptoms can vary widely depending on the specific disorder and the age of onset.