ICD-10-CM category E88: Other and unspecified metabolic disorders
Category E88 is a heading in chapter 4 (Endocrine, nutritional and metabolic diseases (E00-E89)), section Metabolic disorders (E70-E88). It is not billable; report one of the 24 complete codes below.
Notes that apply to every E88 code
- Excludes1 (never coded together)
- histiocytosis X (chronic) (C96.6)
- Use additional code
- codes for associated conditions
Billable codes in E88
| Code | Description |
|---|---|
| E88.01 | Alpha-1-antitrypsin deficiency |
| E88.02 | Plasminogen deficiency |
| E88.09 | Other disorders of plasma-protein metabolism, not elsewhere classified |
| E88.10 | Lipodystrophy, unspecified |
| E88.11 | Partial lipodystrophy |
| E88.12 | Generalized lipodystrophy |
| E88.13 | Localized lipodystrophy |
| E88.14 | HIV-associated lipodystrophy |
| E88.19 | Other lipodystrophy, not elsewhere classified |
| E88.2 | Lipomatosis, not elsewhere classified |
| E88.3 | Tumor lysis syndrome |
| E88.40 | Mitochondrial metabolism disorder, unspecified |
| E88.41 | MELAS syndrome |
| E88.42 | MERRF syndrome |
| E88.43 | Disorders of mitochondrial tRNA synthetases |
| E88.49 | Other mitochondrial metabolism disorders |
| E88.810 | Metabolic syndrome |
| E88.811 | Insulin resistance syndrome, Type A |
| E88.818 | Other insulin resistance |
| E88.819 | Insulin resistance, unspecified |
| E88.82 | Obesity due to disruption of MC4R pathway |
| E88.89 | Other specified metabolic disorders |
| E88.9 | Metabolic disorder, unspecified |
| E88.A | Wasting disease (syndrome) due to underlying condition |
Sources
Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-10. Verify against the primary file before billing or contracting decisions. The reference methodology explains how each figure is computed from these files.
- ICD-10-CM FY2027 tabular order file (category titles)Version FY2027 · effective 2026-10-01 · file icd10cm_order_2027.txtSHA-256 38981fb2c1226e2b…
- ICD-10-CM FY2027 tabular list (chapter titles and ranges)Version FY2027 · effective 2026-10-01 · file 2027-code-tables-tabular-index.zipSHA-256 37baa476323714be…
- ICD-10-CM FY2027 code descriptions addenda (codes added, deleted and revised)Version FY2027 · effective 2026-10-01 · file icd10cm_codes_addenda_2027.txtSHA-256 cfba025073235af4…
- ICD-10 MS-DRG Definitions Manual v44 (text)Version v44 · effective 2026-10-01 · file fy2027-fr-icd10-ms-drg-definitions-manual-files-v44.zipSHA-256 ae4f6c11727fe91f…
- IPPS FY2027 Tables 6A-6K: new, invalid and revised ICD-10-CM/PCS codes, CC/MCC list changes and CC exclusionsVersion FY2027 (final rule; not reissued by CN3) · effective 2026-10-01 · file fy2027-ipps-fr-tables-6a-6k.zipSHA-256 ca0af87b0869a405…
- ICD-10-CM FY2027 POA-exempt codes (full list, additions, deletions and revisions)Version FY2027 · effective 2026-10-01 · file 2027-poa-exempt-codes.zipSHA-256 03f55091045024d0…
- ICD-10-CM to CMS-HCC V28 mappings, payment year 2027 initialVersion PY2027 initial ICD-10-CM mappings (dates of service 2026) · effective 2027-01-01 · file 2027 Initial ICD-10-CM Mappings.csvSHA-256 9c260b06d0dd2806…
- Medicare Coverage Database, current Billing and Coding Articles exportVersion MCD release 2026-10-08 · effective 2026-10-04 · file article.csvSHA-256 5e95c4a8ac3664be…
Codes from the FY2027 ICD-10-CM files (all chapters). Report the code that matches the documentation and the Official Guidelines; this list is not coding advice.