Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
ICD-10-CM Chapter 18 (R00-R99) in the FY2026 code set. 60 codes in this chapter map to a CMS-HCC V28 payment category, across 9 HCC categories.
CMS-HCC V28 categories in this chapter (9)
Open any category for its full member-code list, RAF, and hierarchy.
- HCC 202 Coma, Brain Compression/Anoxic Damage43
- HCC 2 Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock6
- HCC 201 Seizure Disorders and Convulsions4
- HCC 213 Cardio-Respiratory Failure and Shock2
- HCC 212 Respiratory Arrest1
- HCC 137 Drug Use Disorder, Moderate/Severe, or Drug Use with Non-Psychotic Complications1
- HCC 17 Cancer Metastatic to Lung, Liver, Brain, and Other Organs; Acute Myeloid Leukemia Except Promyelocytic1
- HCC 155 Major Depression, Moderate or Severe, without Psychosis1
- HCC 180 Quadriplegia1
Risk-adjusting ICD-10-CM codes (60)
Codes in this chapter that map to a CMS-HCC V28 payment category. Open any code for its full detail.
- R09.2Respiratory arrest
- R11.16Cannabis hyperemesis syndrome
- R18.0Malignant ascites
- R40.20Unspecified coma
- R40.2110Coma scale, eyes open, never, unspecified time
- R40.2111Coma scale, eyes open, never, in the field [EMT or ambulance]
- R40.2112Coma scale, eyes open, never, at arrival to emergency department
- R40.2113Coma scale, eyes open, never, at hospital admission
- R40.2114Coma scale, eyes open, never, 24 hours or more after hospital admission
- R40.2120Coma scale, eyes open, to pain, unspecified time
- R40.2121Coma scale, eyes open, to pain, in the field [EMT or ambulance]
- R40.2122Coma scale, eyes open, to pain, at arrival to emergency department
- R40.2123Coma scale, eyes open, to pain, at hospital admission
- R40.2124Coma scale, eyes open, to pain, 24 hours or more after hospital admission
- R40.2210Coma scale, best verbal response, none, unspecified time
- R40.2211Coma scale, best verbal response, none, in the field [EMT or ambulance]
- R40.2212Coma scale, best verbal response, none, at arrival to emergency department
- R40.2213Coma scale, best verbal response, none, at hospital admission
- R40.2214Coma scale, best verbal response, none, 24 hours or more after hospital admission
- R40.2220Coma scale, best verbal response, incomprehensible words, unspecified time
- R40.2221Coma scale, best verbal response, incomprehensible words, in the field [EMT or ambulance]
- R40.2222Coma scale, best verbal response, incomprehensible words, at arrival to emergency department
- R40.2223Coma scale, best verbal response, incomprehensible words, at hospital admission
- R40.2224Coma scale, best verbal response, incomprehensible words, 24 hours or more after hospital admission
- R40.2310Coma scale, best motor response, none, unspecified time
- R40.2311Coma scale, best motor response, none, in the field [EMT or ambulance]
- R40.2312Coma scale, best motor response, none, at arrival to emergency department
- R40.2313Coma scale, best motor response, none, at hospital admission
- R40.2314Coma scale, best motor response, none, 24 hours or more after hospital admission
- R40.2320Coma scale, best motor response, extension, unspecified time
- R40.2321Coma scale, best motor response, extension, in the field [EMT or ambulance]
- R40.2322Coma scale, best motor response, extension, at arrival to emergency department
- R40.2323Coma scale, best motor response, extension, at hospital admission
- R40.2324Coma scale, best motor response, extension, 24 hours or more after hospital admission
- R40.2430Glasgow coma scale score 3-8, unspecified time
- R40.2431Glasgow coma scale score 3-8, in the field [EMT or ambulance]
- R40.2432Glasgow coma scale score 3-8, at arrival to emergency department
- R40.2433Glasgow coma scale score 3-8, at hospital admission
- R40.2434Glasgow coma scale score 3-8, 24 hours or more after hospital admission
- R40.2440Other coma, without documented Glasgow coma scale score, or with partial score reported, unspecified time
- R40.2441Other coma, without documented Glasgow coma scale score, or with partial score reported, in the field [EMT or ambulance]
- R40.2442Other coma, without documented Glasgow coma scale score, or with partial score reported, at arrival to emergency department
- R40.2443Other coma, without documented Glasgow coma scale score, or with partial score reported, at hospital admission
- R40.2444Other coma, without documented Glasgow coma scale score, or with partial score reported, 24 hours or more after hospital admission
- R40.2ANontraumatic coma due to underlying condition
- R40.3Persistent vegetative state
- R45.88Nonsuicidal self-harm
- R53.2Functional quadriplegia
- R56.00Simple febrile convulsions
- R56.01Complex febrile convulsions
- R56.1Post traumatic seizures
- R56.9Unspecified convulsions
- R57.0Cardiogenic shock
- R57.1Hypovolemic shock
- R57.8Other shock
- R57.9Shock, unspecified
- R65.10Systemic inflammatory response syndrome (SIRS) of non-infectious origin without acute organ dysfunction
- R65.11Systemic inflammatory response syndrome (SIRS) of non-infectious origin with acute organ dysfunction
- R65.20Severe sepsis without septic shock
- R65.21Severe sepsis with septic shock
Frequently asked questions
How many ICD-10-CM codes in Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified risk-adjust under CMS-HCC V28?
60 ICD-10-CM codes in the R00-R99 chapter (Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified) map to a CMS-HCC V28 payment category for payment year 2026.
Which CMS-HCC V28 categories do R00-R99 codes map to?
Codes in this chapter map to 9 distinct CMS-HCC V28 categories, most commonly HCC 202 (Coma, Brain Compression/Anoxic Damage), HCC 2 (Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock), HCC 201 (Seizure Disorders and Convulsions).
What ICD-10-CM chapter is R00-R99?
R00-R99 is ICD-10-CM Chapter 18, Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified, in the FY2026 code set.
Source: FY2026 ICD-10-CM Tabular (CDC/NCHS) and the CMS-HCC v28 PY2026 mapping file.