B33.0 (Epidemic myalgia)
compared with
R07.82 (Intercostal pain),
from the official CMS tabular data.
Summary
These codes should not be reported together because R07.82’s tabular entry lists B33.0 under Excludes1.
Official rule
What is different?
The conditions named and chapter.B33.0 is “Epidemic myalgia”; R07.82 is “Intercostal pain”. B33.0 sits in A00-B99 — Certain Infectious and Parasitic Diseases (A00-B99); R07.82 in R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99).
Registry fact
Can these codes be reported together?
No.R07.82’s entry carries an Excludes1 note covering B33.0: “epidemic myalgia (B33.0)”. Both may be reported only when the documentation shows the two conditions are unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
None.Neither entry carries an Excludes2 note that names the other code. R07.82 carries 2 Excludes2 notes covering other codes; the side-by-side table quotes them.
Official rule
Is one more specific?
Not comparable.The codes sit in different categories; specificity is only comparable within one category.
Is one a parent or header code?
No.Both are billable codes, and neither contains the other.
Registry fact
Are there sequencing instructions?
None.Neither entry carries a Code First or Use Additional Code note that names the other.
Official rule
Are there other coding relationships?
None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.
MedCoder-derived
Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels
An Excludes1 note means the two conditions are not ordinarily reported together for the same encounter, because the classification treats them as mutually exclusive forms of the same condition. The documented exception is when the two conditions are unrelated to each other.
Source / rule
CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a
Official guidance behind these answers
Section I.A.12.a — Excludes1 · applies to: Excludes1
A type 1 Excludes note is a pure excludes note. It means “NOT CODED HERE!” An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition. An exception to the Excludes1 definition is the circumstance when the two conditions are unrelated to each other. If it is not clear whether the two conditions involving an Excludes1 note are related or not, query the provider. For example, code F45.8, Other somatoform disorders, has an Excludes1 note for "sleep related teeth grinding (G47.63)," because "teeth grinding" is an inclusion term under F45.8. Only one of these two codes should be assigned for teeth grinding. However psychogenic dysmenorrhea is also an inclusion term under F45.8, and a patient could have both this condition and sleep related teeth grinding. In this case, the two conditions are clearly unrelated to each other, and so it would be appropriate to report F45.8 and G47.63 together.
ICD-10-CM Official Guidelines FY2026
Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum
Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice:
payer-specific edits and medical-necessity policy are outside its scope.
All data sources