ICD-10 codes for Gallstones
Gallstones is coded primarily under K80, K80.20, K80.21 in the ICD-10-CM (Clinical Modification) classification. Top-level categories include K80 (Cholelithiasis); K81 (Cholecystitis). The 2025 ICD-10-CM code set includes 55 codes related to gallstones, of which 44 are billable (specific enough to appear on a medical claim).
Cholelithiasis (gallstones) is coded under K80 in ICD-10-CM. Subcodes specify whether stones are in the gallbladder, bile duct, or both, and whether cholecystitis (acute or chronic) is also present. K80.20 (calculus of gallbladder without cholecystitis without obstruction) is the most commonly billed code.
Total Codes
55
Billable Codes
44
Categories
2
SNOMED CT Concepts
25+
Top 12 Relevant ICD-10 Codes
The codes most commonly assigned to gallstones, ranked by primary-match status, billable status, and specificity. Tap a code to see its full ICD-10 detail page.
K80.00Calculus of gallbladder w acute cholecyst w/o obstruction
K80.20Calculus of gallbladder w/o cholecystitis w/o obstruction
K80.21Calculus of gallbladder w/o cholecystitis with obstruction
K80Cholelithiasis
K81Cholecystitis
K81.0Acute cholecystitis
K81.1Chronic cholecystitis
K81.2Acute cholecystitis with chronic cholecystitis
K81.9Cholecystitis, unspecified
K80.01Calculus of gallbladder w acute cholecystitis w obstruction
K80.10Calculus of gallbladder w chronic cholecyst w/o obstruction
K80.11Calculus of gallbladder w chronic cholecyst w obstruction
Primary Code Categories
These are the top-level ICD-10-CM categories for gallstones. Click any code to see all specific subcodes within that group.
Billable / Specific Codes (44)
Specific ICD-10-CM codes that can be reported on medical claims for gallstones.
K80.00Calculus of gallbladder w acute cholecyst w/o obstruction
K80.01Calculus of gallbladder w acute cholecystitis w obstruction
K80.10Calculus of gallbladder w chronic cholecyst w/o obstruction
K80.11Calculus of gallbladder w chronic cholecyst w obstruction
K80.12Calculus of GB w acute and chronic cholecyst w/o obstruction
K80.13Calculus of GB w acute and chronic cholecyst w obstruction
K80.18Calculus of gallbladder w oth cholecystitis w/o obstruction
K80.19Calculus of gallbladder w oth cholecystitis with obstruction
K80.20Calculus of gallbladder w/o cholecystitis w/o obstruction
K80.21Calculus of gallbladder w/o cholecystitis with obstruction
K80.30Calculus of bile duct w cholangitis, unsp, w/o obstruction
K80.31Calculus of bile duct w cholangitis, unsp, with obstruction
K80.32Calculus of bile duct with acute cholangitis w/o obstruction
K80.33Calculus of bile duct w acute cholangitis with obstruction
K80.34Calculus of bile duct w chronic cholangitis w/o obstruction
K80.35Calculus of bile duct w chronic cholangitis with obstruction
K80.36Calculus of bile duct w acute and chr cholangitis w/o obst
K80.37Calculus of bile duct w acute and chronic cholangitis w obst
K80.40Calculus of bile duct w cholecystitis, unsp, w/o obstruction
K80.41Calculus of bile duct w cholecystitis, unsp, w obstruction
K80.42Calculus of bile duct w acute cholecystitis w/o obstruction
K80.43Calculus of bile duct w acute cholecystitis with obstruction
K80.44Calculus of bile duct w chronic cholecyst w/o obstruction
K80.45Calculus of bile duct w chronic cholecystitis w obstruction
K80.46Calculus of bile duct w acute and chronic cholecyst w/o obst
K80.47Calculus of bile duct w acute and chronic cholecyst w obst
K80.50Calculus of bile duct w/o cholangitis or cholecyst w/o obst
K80.51Calculus of bile duct w/o cholangitis or cholecyst w obst
K80.60Calculus of GB and bile duct w cholecyst, unsp, w/o obst
K80.61Calculus of GB and bile duct w cholecyst, unsp, w obst
K80.62Calculus of GB and bile duct w acute cholecyst w/o obst
K80.63Calculus of GB and bile duct w acute cholecyst w obstruction
K80.64Calculus of GB and bile duct w chronic cholecyst w/o obst
K80.65Calculus of GB and bile duct w chronic cholecyst w obst
K80.66Calculus of GB and bile duct w ac and chr cholecyst w/o obst
K80.67Calculus of GB and bile duct w ac and chr cholecyst w obst
K80.70Calculus of GB and bile duct w/o cholecyst w/o obstruction
K80.71Calculus of GB and bile duct w/o cholecyst w obstruction
K80.80Other cholelithiasis without obstruction
K80.81Other cholelithiasis with obstruction
K81.0Acute cholecystitis
K81.1Chronic cholecystitis
K81.2Acute cholecystitis with chronic cholecystitis
K81.9Cholecystitis, unspecified
Cross-Mappings to Other Standards
ICD-10-CM codes for gallstones link to several adjacent terminologies. These mappings are precomputed from official sources (NLM RxNav, UMLS Metathesaurus, SNOMED CT International) and served via AutoICD's reference and translate APIs.
SNOMED CT
25+ concepts mapped from this code group. Concept IDs include 197377009, 29484002, 59771005, 70342003, ....
Browse SNOMED CT directoryUMLS Metathesaurus
25+ CUIs indexed. Sample: C0008350, C0156199, C2887949, C2887950, ....
Browse UMLS directoryICD-11
ICD-11 (WHO 2022) classifies many of these conditions under different chapter and stem-code structures. Use the converter to see specific ICD-10 to ICD-11 mappings.
Open ICD-10 to ICD-11 converterFrequently Asked Questions
What is the ICD-10 code for gallstones?
The primary ICD-10-CM codes for gallstones are K80, K80.20, K80.21. Across all sub-categories, 55 codes are grouped under gallstones, with 44 marked as billable (specific enough for a medical claim).
How many ICD-10 codes are there for gallstones?
There are 55 ICD-10-CM codes related to gallstones. Of these, 44 are billable specific codes and 11 are non-billable header categories that organize the specific codes underneath them. Header codes cannot be reported on a claim by themselves.
Is there a billable ICD-10 code for gallstones?
Yes. 44 of the 55 ICD-10-CM codes for gallstones are billable. Common examples include K80.00 (Calculus of gallbladder w acute cholecyst w/o obstruction); K80.01 (Calculus of gallbladder w acute cholecystitis w obstruction); K80.10 (Calculus of gallbladder w chronic cholecyst w/o obstruction). Code to the highest level of specificity supported by the documentation.
Which gallstones ICD-10 code should I use for billing?
The most commonly used billable codes for gallstones include: K80.00 (Calculus of gallbladder w acute cholecyst w/o obstruction); K80.01 (Calculus of gallbladder w acute cholecystitis w obstruction); K80.10 (Calculus of gallbladder w chronic cholecyst w/o obstruction). The correct code depends on the documented clinical presentation, including any complications, episode (acute / chronic), and laterality where applicable. Always code to the highest level of specificity supported by the clinical documentation.
Is K80 a billable ICD-10 code?
No, K80 (Cholelithiasis) is a non-billable header code. You need to use a more specific child code for billing purposes.
What are the SNOMED CT concepts for gallstones?
The ICD-10 codes for gallstones map to at least 25 SNOMED CT concepts. Examples of SNOMED CT concept IDs in this group include 197377009, 29484002, 59771005, 70342003, 197378004. SNOMED CT is a clinical terminology used in electronic health records; AutoICD's coding API returns SNOMED CT IDs alongside each ICD-10 code via the include_snomed=true flag.
What UMLS Concept Unique Identifiers (CUIs) cover gallstones?
The ICD-10 codes for gallstones are linked to at least 25 UMLS CUIs in the National Library of Medicine's Metathesaurus. Sample CUIs include C0008350, C0156199, C2887949, C2887950, C0156201. UMLS CUIs unify the same concept across SNOMED CT, ICD-10, ICD-11, RxNorm, MeSH, and dozens of other source vocabularies.
What are other names for gallstones in ICD-10?
Gallstones may also be referred to as: gallstones, cholelithiasis, cholecystitis, biliary stones. The same ICD-10-CM codes apply regardless of which term appears in the clinical documentation. Synonyms are surfaced by AutoICD's NER pass and mapped to the canonical ICD-10 family above.
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