2027 ICD-10-CM Diagnosis Code R19.35Periumbilic abdominal rigidity
ICD-10-CM Codes›R00–R99›R10-R19›R19
- Billable — Valid for Submission
- Not Chronic
R19.35 is a billable ICD-10-CM diagnosis code for periumbilic abdominal rigidity. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 393 through 395. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. Coders also document this condition as abdominal rigidity. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Abdominal pain and other digestive/abdomen signs and symptoms.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abdominal rigidity
- Abdominal rigidity of periumbilical region
- Guarding of umbilical region
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to R19.35: its own notes plus those printed at R19.3, R19, block R10-R19, and Chapter 18. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- abdominal rigidity with severe abdominal pain (R10.0)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- 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)
Notes
General instructions on how these codes are used.
- This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
- Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
- The conditions and signs or symptoms included in categories R00-R94 consist of:
- (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
- (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
- (c) provisional diagnosis in a patient who failed to return for further investigation or care;
- (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
- (e) cases in which a more precise diagnosis was not available for any other reason;
- (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name R19.35, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming R19.35: they are not reported together with it, unless the two conditions are unrelated.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Rigid, rigidity See Also: condition;
periumbilic R19.35
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Abdominal Pain
Your abdomen extends from below your chest to your groin. Some people call it the stomach, but your abdomen contains many other important organs. Pain in the abdomen can come from any one of them. The pain may start somewhere else, such as your chest. Severe pain doesn't always mean a serious problem.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert R19.35 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R19.35Overview
What is the ICD-10 code for periumbilic abdominal rigidity?
The ICD-10-CM code for periumbilic abdominal rigidity is R19.35 (sometimes written as R1935). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is R19.35 (Abdominal rigidity) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report periumbilic abdominal rigidity on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does R19.35 group to?
When periumbilic abdominal rigidity is the principal diagnosis on an inpatient stay, it groups to MS-DRG 394, 395, 393, with relative weights from 0.6379 to 1.5877 depending on complications. Higher weights mean higher Medicare reimbursement.
Can R19.35 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the periumbilic abdominal rigidity is established, that condition takes the principal position instead.
Can R19.35 be reported with R10.0?
Not as a rule. The Excludes1 note at R19.3, which applies to R19.35, lists "abdominal rigidity with severe abdominal pain (R10.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
