E79.9
BillableDisorder of purine and pyrimidine metabolism, unspecified
HCC Category Mapping
V24HCC 23 — Other Significant Endocrine and Metabolic Disorders
0.230ESRDHCC 23 — Other Significant Endocrine and Metabolic Disorders
0.000RxHCCHCC 43 — Other Significant Endocrine and Metabolic Disorders
0.000What This Code Means
This code describes a problem with how the body breaks down or uses purines and pyrimidines, which are building blocks of DNA and RNA, but the specific type of disorder is not identified. It's used when a metabolic disorder affecting these substances is present but not further specified.
Coding Tips
- •Use this code only when the specific purine or pyrimidine metabolism disorder cannot be determined; always attempt to obtain more specific documentation from the provider before defaulting to the unspecified code
- •Review the patient's lab results and clinical presentation for clues about which specific disorder may be present (such as gout, hyperuricemia, or other named conditions) to support more specific coding
Clinical Significance
Disorder of purine and pyrimidine metabolism, unspecified is used when a purine or pyrimidine metabolic disorder is confirmed but the specific condition has not been documented. This code signals incomplete diagnostic workup and should prompt queries for specificity, particularly since some purine/pyrimidine disorders have specific treatments and important drug interaction implications.
Documentation Requirements
- ✓Provider documentation confirming a purine or pyrimidine metabolism disorder
- ✓Abnormal purine or pyrimidine metabolites in blood or urine
- ✓Clinical symptoms attributed to the metabolic disorder
- ✓Reason for lack of specificity (workup pending, inconclusive results)
- ✓Plan for further diagnostic evaluation
Commonly Confused Codes
E79.0 — Hyperuricemia without gout: more specific when elevated uric acid is the findingE79.1 — Lesch-Nyhan syndrome: use when complete HPRT deficiency with neurological features is confirmedE79.89 — Other specified disorders: use when a specific disorder is named but lacks its own codeM10.9 — Gout, unspecified: for urate crystal arthropathy, a different clinical entity
Code Hierarchy
└E79Disorders of purine and pyrimidine metabolism└E79.9Disorder of purine and pyrimidine metabolism, unspecified
└E79.9Disorder of purine and pyrimidine metabolism, unspecified