Chapter 19
Code Also Notes by the code that carries the note By code with the note 51 By referenced code 46
51 of 51 shown
S01 Open wound of head applies to 270 codes injury of cranial nerve (S04.- ) injury of muscle and tendon of head (S09.1- ) intracranial injury (S06.- ) S02 Fracture of skull and facial bones applies to 456 codes any associated intracranial injury (S06.- ) S04 Injury of cranial nerve applies to 114 codes S06 Intracranial injury applies to 569 codes S06.8A Primary blast injury of brain, not elsewhere classified applies to 29 codes , if applicable, focal traumatic brain injury (S06.3- ) S09.1 Injury of muscle and tendon of head applies to 12 codes any associated open wound (S01.- ) S11 Open wound of neck applies to 129 codes S13.1 Subluxation and dislocation of cervical vertebrae applies to 54 codes S14 Injury of nerves and spinal cord at neck level applies to 183 codes S15 Injury of blood vessels at neck level applies to 150 codes any associated open wound (S11.- ) S16 Injury of muscle, fascia and tendon at neck level applies to 12 codes any associated open wound (S11.- ) S21 Open wound of thorax applies to 288 codes S22 Fracture of rib(s), sternum and thoracic spine applies to 354 codes injury of intrathoracic organ (S27.- ) traumatic hemopneumothorax (S27.2 ) traumatic hemothorax (S27.1- ) traumatic pneumothorax (S27.0 ) S23.1 Subluxation and dislocation of thoracic vertebra applies to 78 codes S24 Injury of nerves and spinal cord at thorax level applies to 93 codes fracture of thoracic vertebra (S22.0- ) open wound of thorax (S21.- ) transient paralysis (R29.5 ) S25 Injury of blood vessels of thorax applies to 195 codes any associated open wound (S21.- ) S26 Injury of heart applies to 42 codes open wound of thorax (S21.- ) traumatic hemopneumothorax (S27.2 ) traumatic hemothorax (S27.1 ) traumatic pneumothorax (S27.0 ) S27 Injury of other and unspecified intrathoracic organs applies to 162 codes any associated open wound of thorax (S21.- ) S29 Other and unspecified injuries of thorax applies to 42 codes any associated open wound (S21.- ) S31 Open wound of abdomen, lower back, pelvis and external genitals applies to 558 codes S32.1 Fracture of sacrum applies to 108 codes any associated fracture of pelvic ring (S32.8- ) S32.4 Fracture of acetabulum applies to 324 codes any associated fracture of pelvic ring (S32.8- ) S32.8 Fracture of other parts of pelvis applies to 24 codes S33.1 Subluxation and dislocation of lumbar vertebra applies to 30 codes S34 Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level applies to 93 codes fracture of vertebra (S22.0- , S32.0- ) open wound of abdomen, lower back and pelvis (S31.- ) transient paralysis (R29.5 ) S35 Injury of blood vessels at abdomen, lower back and pelvis level applies to 222 codes any associated open wound (S31.- ) S36 Injury of intra-abdominal organs applies to 336 codes any associated open wound (S31.- ) S37 Injury of urinary and pelvic organs applies to 249 codes any associated open wound (S31.- ) S39 Other and unspecified injuries of abdomen, lower back, pelvis and external genitals applies to 63 codes any associated open wound (S31.- ) S44 Injury of nerves at shoulder and upper arm level applies to 72 codes any associated open wound (S41.- ) S45 Injury of blood vessels at shoulder and upper arm level applies to 162 codes any associated open wound (S41.- ) S46 Injury of muscle, fascia and tendon at shoulder and upper arm level applies to 216 codes any associated open wound (S41.- ) S54 Injury of nerves at forearm level applies to 54 codes any associated open wound (S51.- ) S55 Injury of blood vessels at forearm level applies to 135 codes any associated open wound (S51.- ) S56 Injury of muscle, fascia and tendon at forearm level applies to 432 codes any associated open wound (S51.- ) S64 Injury of nerves at wrist and hand level applies to 84 codes any associated open wound (S61.- ) S65 Injury of blood vessels at wrist and hand level applies to 279 codes any associated open wound (S61.- ) S66 Injury of muscle, fascia and tendon at wrist and hand level applies to 540 codes any associated open wound (S61.- ) S74 Injury of nerves at hip and thigh level applies to 45 codes any associated open wound (S71.- ) S75 Injury of blood vessels at hip and thigh level applies to 162 codes any associated open wound (S71.- ) S76 Injury of muscle, fascia and tendon at hip and thigh level applies to 216 codes any associated open wound (S71.- ) S84 Injury of nerves at lower leg level applies to 45 codes any associated open wound (S81.- ) S85 Injury of blood vessels at lower leg level applies to 270 codes any associated open wound (S81.- ) S86 Injury of muscle, fascia and tendon at lower leg level applies to 216 codes any associated open wound (S81.- ) S94 Injury of nerves at ankle and foot level applies to 54 codes any associated open wound (S91.- ) S95 Injury of blood vessels at ankle and foot level applies to 135 codes any associated open wound (S91.- ) S96 Injury of muscle and tendon at ankle and foot level applies to 180 codes any associated open wound (S91.- ) Block note Block T66-T78 Other and unspecified effects of external causes applies to 456 codes highway rest stop (Y92.523 ) school (private) (public) (state) as the place of occurrence of the external cause (Y92.21- ) service areas as the place of occurrence of the external cause (Y92.52- ) single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01- ) transport vehicle as the place of occurrence of the external cause (Y92.81- ) T80.69 Other serum reaction due to other serum applies to 3 codes , if applicable, arthropathy in hypersensitivity reactions classified elsewhere (M36.4 ) T81.4 Infection following a procedure applies to 18 codes , if applicable, disruption of internal operation (surgical) wound (T81.32- ) T81.83 Persistent postprocedural fistula applies to 3 codes , if applicable, disruption of internal operation (surgical) wound (T81.32- ) S00 -
S09 Superficial injury of head to Other and unspecified injuries of head 1,934 codes G96.00 Cerebrospinal fluid leak, unspecified: head injury (S00-S09) G96.08 Other cranial cerebrospinal fluid leak: head injury (S00 - S09) G96.09 Other spinal cerebrospinal fluid leak: head injury (S00 - S09) S01.- Open wound of head 270 codes S04 Injury of cranial nerve: open wound of head (S01.-) S06 Intracranial injury: open wound of head (S01.-) S09.1 Injury of muscle and tendon of head: any associated open wound (S01.-) S02.- Fracture of skull and facial bones 456 codes S04 Injury of cranial nerve: skull fracture (S02.-) S06 Intracranial injury: skull fracture (S02.-) S04.- Injury of cranial nerve 114 codes S01 Open wound of head: injury of cranial nerve (S04.-) F07.81 Postconcussional syndrome: , if applicable, sequela of concussion (S06.0X- with seventh character S) S06.3- Focal traumatic brain injury 261 codes S06.8A Primary blast injury of brain, not elsewhere classified: , if applicable, focal traumatic brain injury (S06.3-) S06.- Intracranial injury 569 codes S01 Open wound of head: intracranial injury (S06.-) S02 Fracture of skull and facial bones: any associated intracranial injury (S06.-) S09.1- Injury of muscle and tendon of head 12 codes S01 Open wound of head: injury of muscle and tendon of head (S09.1-) S11.- Open wound of neck 129 codes S13.1 Subluxation and dislocation of cervical vertebrae: open wound of neck (S11.-) S14 Injury of nerves and spinal cord at neck level: open wound of neck (S11.-) S15 Injury of blood vessels at neck level: any associated open wound (S11.-) S16 Injury of muscle, fascia and tendon at neck level: any associated open wound (S11.-) S12.0 -
S12.6 Fracture of first cervical vertebra to Fracture of seventh cervical vertebra 414 codes S14 Injury of nerves and spinal cord at neck level: fracture of cervical vertebra (S12.0--S12.6.-) S14.0 Concussion and edema of cervical spinal cord 3 codes S11 Open wound of neck: spinal cord injury (S14.0, S14.1-) S14.1- Other and unspecified injuries of cervical spinal cord 162 codes S11 Open wound of neck: spinal cord injury (S14.0, S14.1-) S13.1 Subluxation and dislocation of cervical vertebrae: spinal cord injury (S14.1-) S21.- Open wound of thorax 288 codes S23.1 Subluxation and dislocation of thoracic vertebra: open wound of thorax (S21.-) S24 Injury of nerves and spinal cord at thorax level: open wound of thorax (S21.-) S25 Injury of blood vessels of thorax: any associated open wound (S21.-) S26 Injury of heart: open wound of thorax (S21.-) S27 Injury of other and unspecified intrathoracic organs: any associated open wound of thorax (S21.-) S29 Other and unspecified injuries of thorax: any associated open wound (S21.-) S22.0- Fracture of thoracic vertebra 270 codes S24 Injury of nerves and spinal cord at thorax level: fracture of thoracic vertebra (S22.0-) S34 Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level: fracture of vertebra (S22.0-, S32.0-) S22.3- Fracture of one rib 18 codes S21 Open wound of thorax: rib fracture (S22.3-, S22.4-) S22.4- Multiple fractures of ribs 24 codes S21 Open wound of thorax: rib fracture (S22.3-, S22.4-) S24.0 Concussion and edema of thoracic spinal cord 3 codes S21 Open wound of thorax: spinal cord injury (S24.0-, S24.1-) S23.1 Subluxation and dislocation of thoracic vertebra: spinal cord injury (S24.0-, S24.1-) S31 Open wound of abdomen, lower back, pelvis and external genitals: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S33.1 Subluxation and dislocation of lumbar vertebra: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S24.1- Other and unspecified injuries of thoracic spinal cord 75 codes S21 Open wound of thorax: spinal cord injury (S24.0-, S24.1-) S23.1 Subluxation and dislocation of thoracic vertebra: spinal cord injury (S24.0-, S24.1-) S31 Open wound of abdomen, lower back, pelvis and external genitals: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S33.1 Subluxation and dislocation of lumbar vertebra: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S26.- Injury of heart 42 codes S21 Open wound of thorax: injury of heart (S26.-) S27.0 Traumatic pneumothorax 3 codes S21 Open wound of thorax: traumatic pneumothorax (S27.0) S22 Fracture of rib(s), sternum and thoracic spine: traumatic pneumothorax (S27.0) S26 Injury of heart: traumatic pneumothorax (S27.0) S27.1 Traumatic hemothorax 3 codes S21 Open wound of thorax: traumatic hemothorax (S27.1) S22 Fracture of rib(s), sternum and thoracic spine: traumatic hemothorax (S27.1-) S26 Injury of heart: traumatic hemothorax (S27.1) S27.2 Traumatic hemopneumothorax 3 codes S22 Fracture of rib(s), sternum and thoracic spine: traumatic hemopneumothorax (S27.2) S26 Injury of heart: traumatic hemopneumothorax (S27.2) S27.3 Other and unspecified injuries of lung 45 codes S21 Open wound of thorax: traumatic hemopneumothorax (S27.3) S27.- Injury of other and unspecified intrathoracic organs 162 codes S21 Open wound of thorax: injury of intrathoracic organs (S27.-) S22 Fracture of rib(s), sternum and thoracic spine: injury of intrathoracic organ (S27.-) S31 Open wound of abdomen, lower back, pelvis and external genitals 558 codes S33.1 Subluxation and dislocation of lumbar vertebra: open wound of abdomen, lower back and pelvis (S31) S34 Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level: open wound of abdomen, lower back and pelvis (S31.-) S35 Injury of blood vessels at abdomen, lower back and pelvis level: any associated open wound (S31.-) S36 Injury of intra-abdominal organs: any associated open wound (S31.-) S37 Injury of urinary and pelvic organs: any associated open wound (S31.-) S39 Other and unspecified injuries of abdomen, lower back, pelvis and external genitals: any associated open wound (S31.-) S32.0- Fracture of lumbar vertebra 180 codes S34 Injury of lumbar and sacral spinal cord and nerves at abdomen, lower back and pelvis level: fracture of vertebra (S22.0-, S32.0-) S32.1- Fracture of sacrum 108 codes S32.8 Fracture of other parts of pelvis: sacral fracture (S32.1-) S32.4- Fracture of acetabulum 324 codes S32.8 Fracture of other parts of pelvis: fracture of acetabulum (S32.4-) S32.8- Fracture of other parts of pelvis 24 codes S32.1 Fracture of sacrum: any associated fracture of pelvic ring (S32.8-) S32.4 Fracture of acetabulum: any associated fracture of pelvic ring (S32.8-) S34.0- Concussion and edema of lumbar and sacral spinal cord 6 codes S31 Open wound of abdomen, lower back, pelvis and external genitals: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S33.1 Subluxation and dislocation of lumbar vertebra: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S34.1- Other and unspecified injury of lumbar and sacral spinal cord 63 codes S31 Open wound of abdomen, lower back, pelvis and external genitals: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S33.1 Subluxation and dislocation of lumbar vertebra: spinal cord injury (S24.0, S24.1-, S34.0-, S34.1-) S41.- Open wound of shoulder and upper arm 108 codes S44 Injury of nerves at shoulder and upper arm level: any associated open wound (S41.-) S45 Injury of blood vessels at shoulder and upper arm level: any associated open wound (S41.-) S46 Injury of muscle, fascia and tendon at shoulder and upper arm level: any associated open wound (S41.-) S51.- Open wound of elbow and forearm 108 codes S54 Injury of nerves at forearm level: any associated open wound (S51.-) S55 Injury of blood vessels at forearm level: any associated open wound (S51.-) S56 Injury of muscle, fascia and tendon at forearm level: any associated open wound (S51.-) S61.- Open wound of wrist, hand and fingers 576 codes S64 Injury of nerves at wrist and hand level: any associated open wound (S61.-) S65 Injury of blood vessels at wrist and hand level: any associated open wound (S61.-) S66 Injury of muscle, fascia and tendon at wrist and hand level: any associated open wound (S61.-) S71.- Open wound of hip and thigh 108 codes S74 Injury of nerves at hip and thigh level: any associated open wound (S71.-) S75 Injury of blood vessels at hip and thigh level: any associated open wound (S71.-) S76 Injury of muscle, fascia and tendon at hip and thigh level: any associated open wound (S71.-) S81.- Open wound of knee and lower leg 108 codes S84 Injury of nerves at lower leg level: any associated open wound (S81.-) S85 Injury of blood vessels at lower leg level: any associated open wound (S81.-) S86 Injury of muscle, fascia and tendon at lower leg level: any associated open wound (S81.-) S91.- Open wound of ankle, foot and toes 360 codes S94 Injury of nerves at ankle and foot level: any associated open wound (S91.-) S95 Injury of blood vessels at ankle and foot level: any associated open wound (S91.-) S96 Injury of muscle and tendon at ankle and foot level: any associated open wound (S91.-) T17.- Foreign body in respiratory tract 150 codes J69.0 Pneumonitis due to inhalation of food and vomit: any associated foreign body in respiratory tract (T17.-) T36 -
T50 Poisoning by, adverse effect of and underdosing of systemic antibiotics to Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances 3,186 codes Z91.1 Patient's noncompliance with medical treatment and regimen: , if applicable, to identify underdosing of specific drug (T36-T50 with final character 6) T45.1X- Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugs 18 codes J34.81 Nasal mucositis (ulcerative): antineoplastic and immunosuppressive drugs (T45.1X-) K92.81 Gastrointestinal mucositis (ulcerative): antineoplastic and immunosuppressive drugs (T45.1X-) N76.81 Mucositis (ulcerative) of vagina and vulva: antineoplastic and immunosuppressive drugs (T45.1X-) T50.5X5 Adverse effect of appetite depressants 3 codes I27.21 Secondary pulmonary arterial hypertension: adverse effect of appetite depressants (T50.5X5) T81.32- Disruption of internal operation (surgical) wound, not elsewhere classified 12 codes J86.0 Pyothorax with fistula: , if applicable, disruption of internal operation (surgical) wound (T81.32-) K31.6 Fistula of stomach and duodenum: , if applicable, disruption of internal operation (surgical) wound (T81.32-) K63.2 Fistula of intestine: , if applicable, disruption of internal operation (surgical) wound (T81.32-) K82.3 Fistula of gallbladder: , if applicable, disruption of internal operation (surgical) wound (T81.32-) T81.4 Infection following a procedure: , if applicable, disruption of internal operation (surgical) wound (T81.32-) T81.83 Persistent postprocedural fistula: , if applicable, disruption of internal operation (surgical) wound (T81.32-) T82.218- Other mechanical complication of coronary artery bypass graft 3 codes I21.A9 Other myocardial infarction type: occlusion of coronary artery bypass graft (T82.218-) T82.855- Stenosis of coronary artery stent 3 codes I21.A9 Other myocardial infarction type: (acute) stent stenosis (T82.855-) T82.867- Thrombosis due to cardiac prosthetic devices, implants and grafts 3 codes I21.A9 Other myocardial infarction type: (acute) stent thrombosis (T82.867-) T82.897- Other specified complication of cardiac prosthetic devices, implants and grafts 3 codes I21.A9 Other myocardial infarction type: (acute) stent occlusion (T82.897-)
Questions About Code Also Notes What does a Code Also note mean? A Code Also note instructs that two codes may be required to fully describe a condition, but it does not give sequencing direction (Section I.A.17). The FY 2027 Tabular List has 689 of them; 495 name other codes, with 538 references to 349 distinct codes, categories and ranges.
Which code goes first with a Code Also note? The note does not decide it. Sequencing depends on the circumstances of the encounter: normally the condition that is the main reason for the visit goes first.
Related References 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.
