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K59.00 — Constipation, unspecified
K59.00
What this code means
Constipation means infrequent, hard or difficult-to-pass stools; the type is not specified here.
Also called: constipation.
When this code is used
Used for constipation, unspecified.
Where it sits in ICD-10-CM
Code K59.00 belongs to Chapter 11: Diseases of the digestive system, which covers codes K00–K95 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Watch: related videos
Frequently asked questions
What is ICD-10-CM code K59.00?
K59.00 is the ICD-10-CM diagnosis code for “Constipation, unspecified”. Constipation means infrequent, hard or difficult-to-pass stools; the type is not specified here.
When is code K59.00 used?
Used for constipation, unspecified. It belongs to Chapter 11 of ICD-10-CM (Diseases of the digestive system).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.