ICD-10-CM Excludes2 Notes · Chapter 18 · FY 2027 R00-R99

Excludes2 Notes in Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified ICD-10-CM

An Excludes2 note means "NOT INCLUDED HERE": the excluded condition is not part of this code, but a patient may have both, so both codes may be reported. In Chapter 18 (R00-R99), notes printed in the chapter name other codes 96 times, and Excludes2 Notes anywhere in the Tabular List name the chapter’s codes 104 times, covering 67 distinct codes, categories and ranges. Switch views to read the list either way.

✓ From the official FY 2027 ICD-10-CM Tabular ListDefinitions follow the Official Guidelines, Section I.A
96
References in Its Notes
104
References to Its Codes
67
Chapter Codes Named
R00-R99
Chapter 18
Chapter 18

Excludes2 Notes by the code that carries the note

51 of 51 shown
  • Chapter note Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
    • abnormal findings on antenatal screening of mother (O28.-)
    • certain conditions originating in the perinatal period (P04-P96)
    • signs and symptoms of breast (N63, N64.5)
  • R00 Abnormalities of heart beat applies to 5 codes
    • specified arrhythmias (I47-I49)
  • R04.1 Hemorrhage from throat
  • R05 Cough applies to 6 codes
    • cough with hemorrhage (R04.2)
  • R06.5 Mouth breathing
  • R07 Pain in throat and chest applies to 7 codes
  • R07.0 Pain in throat
  • R09.0 Asphyxia and hypoxemia applies to 2 codes
  • R09.89 Other specified symptoms and signs involving the circulatory and respiratory systems
  • Block note Block R10-R19 Symptoms and signs involving the digestive system and abdomen applies to 99 codes
    • congenital or infantile pylorospasm (Q40.0)
    • gastrointestinal hemorrhage (K92.0-K92.2)
    • intestinal obstruction (K56.-)
    • newborn gastrointestinal hemorrhage (P54.0-P54.3)
    • newborn intestinal obstruction (P76.-)
    • pylorospasm (K31.3)
    • signs and symptoms involving the urinary system (R30-R39)
    • symptoms referable to female genital organs (N94.-)
    • symptoms referable to male genital organs (N48-N50)
  • R10 Abdominal and pelvic pain applies to 42 codes
    • costovertebral (angle) tenderness (R39.85)
    • dorsalgia (M54.-)
    • flatulence and related conditions (R14.-)
  • R10.1 Pain localized to upper abdomen applies to 4 codes
    • pain localized to flank (R10.A-)
    • pelvic and perineal pain (R10.2-)
  • R10.2 Pelvic and perineal pain applies to 5 codes
    • pain localized to other parts of lower abdomen (R10.3-)
    • pain localized to upper abdomen (R10.1-)
  • R10.3 Pain localized to other parts of lower abdomen applies to 4 codes
    • pain localized to flank (R10.A-)
    • pelvic and perineal pain (R10.2-)
  • R10.81 Abdominal tenderness applies to 8 codes
    • pain localized to other parts of lower abdomen (R10.3-)
    • pain localized to upper abdomen (R10.1-)
  • R10.82 Rebound abdominal tenderness applies to 8 codes
    • pain localized to other parts of lower abdomen (R10.3-)
    • pain localized to upper abdomen (R10.1-)
  • R10.A Pain localized to flank applies to 4 codes
    • pain localized to other parts of lower abdomen (R10.3-)
    • pain localized to upper abdomen (R10.1-)
  • R11.15 Cyclical vomiting syndrome unrelated to migraine
    • bulimia nervosa (F50.20)
    • diabetes mellitus due to underlying condition (E08.-)
  • R12 Heartburn
  • R15.0 Incomplete defecation
  • Block note Block R20-R23 Symptoms and signs involving the skin and subcutaneous tissue applies to 26 codes
  • R22.2 Localized swelling, mass and lump, trunk
    • breast mass and lump (N63)
  • R25.2 Cramp and spasm
  • R26.2 Difficulty in walking, not elsewhere classified
  • R29.2 Abnormal reflex
    • abnormal pupillary reflex (H57.0)
    • hyperactive gag reflex (J39.2)
    • vasovagal reaction or syncope (R55)
  • R29.6 Repeated falls
  • R29.89 Other symptoms and signs involving the musculoskeletal system applies to 3 codes
  • R35.81 Nocturnal polyuria
  • R39.85 Costovertebral (angle) tenderness applies to 4 codes
    • abdominal and pelvic pain (R10.-)
  • Block note Block R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior applies to 157 codes
    • symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
  • R44 Other symptoms and signs involving general sensations and perceptions applies to 6 codes
    • disturbances of skin sensation (R20.-)
  • R51 Headache applies to 2 codes
    • atypical face pain (G50.1)
    • migraine and other headache syndromes (G43-G44)
    • trigeminal neuralgia (G50.0)
  • R53.83 Other fatigue
    • exhaustion and fatigue due to depressive episode (F32.-)
  • R57.0 Cardiogenic shock
  • R60.1 Generalized edema
  • R63.3 Feeding difficulties applies to 4 codes
    • eating disorders (F50.-)
    • feeding problems of newborn (P92.-)
    • infant feeding disorder of nonorganic origin (F98.2-)
  • R68.2 Dry mouth, unspecified
    • salivary gland hyposecretion (K11.7)
  • Block note Block R70-R79 Abnormal findings on examination of blood, without diagnosis applies to 45 codes
    • abnormal findings on antenatal screening of mother (O28.-)
    • abnormalities of lipids (E78.-)
    • abnormalities of platelets and thrombocytes (D69.-)
    • abnormalities of white blood cells classified elsewhere (D70-D72)
    • coagulation hemorrhagic disorders (D65-D68)
    • hemorrhagic and hematological disorders of newborn (P50-P61)
  • R78 Findings of drugs and other substances, not normally found in blood applies to 13 codes
    • mental or behavioral disorders due to psychoactive substance use (F10-F19)
  • R79 Other abnormal findings of blood chemistry applies to 7 codes
    • hyperglycemia NOS (R73.9)
  • R79.1 Abnormal coagulation profile
    • abnormality of fluid, electrolyte or acid-base balance (E86-E87)
  • R82 Other and unspecified abnormal findings in urine applies to 18 codes
  • Block note Block R83-R89 Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis applies to 93 codes
    • abnormal findings on examination of blood, without diagnosis (R70-R79)
    • abnormal findings on examination of urine, without diagnosis (R80-R82)
    • abnormal tumor markers (R97.-)
  • R85.61 Abnormal cytologic smear of anus applies to 9 codes
    • anal high risk human papillomavirus (HPV) DNA test positive (R85.81)
    • anal low risk human papillomavirus (HPV) DNA test positive (R85.82)
  • R87.61 Abnormal cytological findings in specimens from cervix uteri applies to 9 codes
    • cervical high risk human papillomavirus (HPV) DNA test positive (R87.810)
    • cervical low risk human papillomavirus (HPV) DNA test positive (R87.820)
  • R87.62 Abnormal cytological findings in specimens from vagina applies to 8 codes
    • vaginal high risk human papillomavirus (HPV) DNA test positive (R87.811)
    • vaginal low risk human papillomavirus (HPV) DNA test positive (R87.821)
  • R92.0 Mammographic microcalcification found on diagnostic imaging of breast
    • mammographic calcification (calculus) found on diagnostic imaging of breast (R92.1)
  • R93.4 Abnormal findings on diagnostic imaging of urinary organs applies to 5 codes
    • hypertrophy of kidney (N28.81)
  • R93.6 Abnormal findings on diagnostic imaging of limbs
    • abnormal finding in skin and subcutaneous tissue (R93.8-)
  • R93.7 Abnormal findings on diagnostic imaging of other parts of musculoskeletal system
    • abnormal findings on diagnostic imaging of skull (R93.0)
  • R94.7 Abnormal results of other endocrine function studies

The first view lists notes printed in this chapter (a note on a category or block applies to every code beneath it). The second lists codes of this chapter named by Excludes2 Notes anywhere in the Tabular List, including notes in other chapters.

Questions About Excludes2 Notes

What does an Excludes2 note mean?

An Excludes2 note means “Not included here”: the excluded condition is not part of the condition represented by the code, but a patient may have both conditions at the same time (Section I.A.12.b). The FY 2027 Tabular List has 2,529 of them; 2,493 name other codes, with 2,799 references to 1,779 distinct codes, categories and ranges.

Can both codes be reported when there is an Excludes2 note?

Yes. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate: that is, when the patient has both conditions and both are documented.

Related References

ICD-10-CM Official GuidelinesICD-10-CM Code LookupICD-10-CM Codes ListCode Lists by Tag

Source: FY 2027 ICD-10-CM Tabular List (CMS and NCHS) and the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027, Section I.A. ICD List is not affiliated with CMS or NCHS.