ICD-10 K59.00
Billable / SpecificConstipation, unspecified
About ICD-10-CM K59.00
ICD-10-CM code K59.00 represents Constipation, unspecified. This is a billable/specific code in the Digestive System chapter (block K59). The 2026 edition of ICD-10-CM K59.00 became effective on October 1, 2025.
Medicare LCD Coverage for K59.00
Local Coverage Determinations (LCDs) from CMS MACs that list K59.00 as a covered diagnosis.
Showing top 10 of 107 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing K59.00.
3 Medicare
5 Aetna
CPT Codes Commonly Billed with K59.00
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert K59.00 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 |
|---|---|---|
| K59.00 | 56400 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To K59.00
Other codes in section K55-K64 (Other diseases of intestines).
ICD-10 K59.00, Billing FAQ
Is ICD-10 code K59.00 billable? +
Yes, K59.00 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What ICD-9 codes does K59.00 map to? +
Per CMS GEMs, K59.00 maps to ICD-9 codes: 56400. 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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