ICD-10 R53.83
Billable / SpecificOther fatigue
About ICD-10-CM R53.83
ICD-10-CM code R53.83 represents Other fatigue. This is a billable/specific code in the Symptoms, Signs, and Abnormal Findings chapter (block R53). The 2026 edition of ICD-10-CM R53.83 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under R53.83. Per CMS ICD-10-CM Tabular 2026.
- Fatigue NOS
- Lack of energy
- Lethargy
- Tiredness
Type 2 Excludes
Not included here, the excluded code is not part of R53.83, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- exhaustion and fatigue due to depressive episode (F32.-)
Medicare LCD Coverage for R53.83
Local Coverage Determinations (LCDs) from CMS MACs that list R53.83 as a covered diagnosis.
Showing top 10 of 243 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing R53.83.
4 Aetna
2 Cigna
5 Medicare
CPT Codes Commonly Billed with R53.83
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 99202 New patient office visit — fever, headache, abdominal pain, cough, dyspnea, fatigue, dizziness, limb pain, nausea, routine exam, URI, UTI, pharyngitis, otitis, chest pain, weight loss Primary Care
- 99203 New patient office visit — common complaints plus chronic conditions: HTN, diabetes, hyperlipidemia, asthma, GERD, back pain, migraine, tachycardia, prediabetes Primary Care
- 99213 Established patient — HTN follow-up, diabetes management, hyperlipidemia, asthma, anxiety, common complaints, back pain, GERD, migraine, acne, joint pain, prediabetes, obesity, anemia, hypothyroid, fatigue Primary Care
- 85025 CBC with differential — anemia, iron deficiency, fatigue, thrombocytopenia, neutropenia, leukemia, lymphoma, abnormal labs, routine exam, screening, fever, elevated WBC Laboratory
- 85027 CBC automated — anemia, iron deficiency, fatigue, routine exam, abnormal labs, melena, hematemesis Laboratory
- 84443 TSH — hypothyroidism, hyperthyroidism, thyroiditis, weight loss, weight gain, post-surgical hypothyroidism, fatigue, routine exam, screening Laboratory
Convert R53.83 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| R53.83 | 78079 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To R53.83
Other codes in section R50-R69 (General symptoms and signs).
ICD-10 R53.83, Billing FAQ
Is ICD-10 code R53.83 billable? +
Yes, R53.83 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to R53.83? +
ICD-10 R53.83 includes: Fatigue NOS; Lack of energy; Lethargy, and 1 more clinical synonyms.
What codes are Type 2 Excludes for R53.83? +
Type 2 Excludes (may be coded together when both conditions exist): exhaustion and fatigue due to depressive episode (F32.-)
What CPT codes are commonly billed with R53.83? +
Procedures frequently paired with R53.83 include: 99202, 99203, 99213, 85025, 85027.
What ICD-9 codes does R53.83 map to? +
Per CMS GEMs, R53.83 maps to ICD-9 codes: 78079. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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